Writing for Quanta magazine, an adjunct professor of neuroscience at the University of Maryland described an intriguing study led by MIT neuroscientist Li-Huei Tsai: Incredible as it may sound, the researchers improved the brains of animals with Alzheimer's simply by using LED lights that flashed 40 times a second. Even sound played at this charmed frequency, 40 hertz, had a similar effect.... Exposing the mice to both stimuli, a light show synchronized with pulsating sound, had an even more powerful effect, reducing amyloid plaques [a hallmark of Alzheimer's disease] in regions throughout the cerebral cortex, including the prefrontal region, which carries out higher-level executive functions that are impaired in Alzheimer's.

I was amazed, so just to make sure I wasn't getting unduly excited about the possibility of using flashing lights and sounds to treat humans, I talked to Hiroaki Wake, a neuroscientist at Kobe University in Japan who was not involved with the work. "It would be fantastic!" he said. "The treatment may also be effective for a number of neurodegenerative disorders like Parkinson's disease and ALS," where microglia also play a role... Tsai's team has just begun assessing their strobe-light method on patients, and they're sure to be joined by others as more researchers learn of this promising work.
According to the article, another study at the Georgia Institute of Technology is investigating a specific mechanism with which doctors "could potentially treat different diseases just by varying the light and sound rhythms they use.

"The different stimuli would rock the neurons into producing appropriate brain wave frequencies, causing nearby microglia to release specific types of cytokines, which tell microglia in general how to go to work repairing the brain."

An anonymous reader quotes a report from The Guardian: A new study published in Scientific Reports reveals that crystalline rocks, such as granite, have a natural self-sealing mechanism, capable of keeping fluids locked away for millions of years. Careful analysis of the chemistry and structure of granites from Japan and the UK revealed that when fluid did enter the rock (via fractures), it travelled a few centimeters at most. The scientists believe that calcium in the rock reacted with carbonate in the fluid to create tiny crystals of calcite that plugged all the gaps and prevented further flow. "This amount of calcite would never be expected in a granite, and the distribution of it indicates it almost certainly formed from small quantities of fluid trying to move through the rock," says Roy Wogelius from the University of Manchester. Greater understanding is needed before we finalize our radioactive waste disposal strategies, but this is a promising step forward.

The Diet enacted a bill Wednesday to create "super cities" where artificial intelligence, big data and other technologies are utilized to resolve social problems. The Japan Times reports: The bill revising the national strategic special zone law passed the House of Councilors by a majority vote with support mainly from the ruling coalition. The revision stipulates procedures to speed up the changing of regulations in various fields to facilitate the creating of such smart cities. The government hopes to utilize cutting-edge technologies to address issues such as depopulation and the aging of society. In such cities, data-linking platforms to collect and organize various kinds of data from administrative organizations and companies will be established for autonomous driving, cashless payments, telemedicine and other services.

Under the revised law, local governments to be selected will launch forums with the central government and private companies, draw up city development plans and make applications to the state after winning understanding from local residents. The government hopes to realize such city development plans swiftly after discussions at related government agencies.

Prime minister Shinzo Abe has declared victory for the "Japan model" of fighting coronavirus as he lifted a nationwide state of emergency after seven weeks [Editor's note: the link may be paywalled; alternative source]. From a report: Speaking at a press conference on Monday evening in Tokyo, Mr Abe said that Japan had avoided an explosive increase in cases without the compulsory lockdowns used in Europe or the US. The ending of the state of emergency in the last five prefectures it covered -- Tokyo, Kanagawa, Saitama, Chiba and Hokkaido -- will mean that the world's fourth-largest economy can start to reopen for business. "In a characteristically Japanese way, we have all but brought this epidemic under control in the last month and a half," said Mr Abe. "Surely, it shows the power of the Japan model." Japan's constitution prohibits a compulsory lockdown but, under the state of emergency that began on April 7, the government requested voluntary social distancing and business closures. Under that regime, the number of new Covid-19 cases fell from 600-700 a day in mid-April to about 20-30 a day last week. The country has diagnosed 16,581 cases of coronavirus with 830 deaths -- many fewer than similar-sized populations in Europe or the US.

We will need a comprehensive strategy to reduce the sort of interactions that can lead to more infections. The Atlantic: COVID-19 has mounted a sustained attack on public life, especially indoor life. Many of the largest super-spreader events took place inside -- at a church in South Korea, an auditorium in France, a conference in Massachusetts. The danger of the indoors is more than anecdotal. A Hong Kong paper awaiting peer review [PDF] found that of 7,324 documented cases in China, only one outbreak occurred outside -- during a conversation among several men in a small village. The risk of infection indoors is almost 19 times higher than in open-air environments, according to another study [PDF] from researchers in Japan. Appropriately, just about every public indoor space in America has been shut down or, in the case of essential businesses such as grocers, adapted for social-distancing restrictions. These closures have been economically ruinous, transforming large swaths of urban and suburban life into a morbid line of darkened windows.

Today, states are emerging from the lockdown phase of the crisis and entering a queasy period of reopening. But offices, schools, stores, theaters, restaurants, bars, gyms, fitness centers, and museums will have no semblance of normalcy until we learn how to be safe -- and feel safe -- inside. To open these spaces, we must be guided by science and expertise. Fortunately for us, researchers are discovering the secrets of how COVID-19 spreads with a combination of clever modeling and detective work. Before we review the relevant studies and draw out lessons for the future of the great indoors, a brief word of humility. Our understanding of this disease is dynamic. Today's conventional wisdom could be tomorrow's busted myth. Think of these studies not as gospels, but as clues in a gradually unraveling mystery.

"High school students who took Advanced Placement exams online this week may have to do it again next month because of a technical glitch," writes CNN, sharing some of the students' horror stories. With 45 seconds left in her exam, 11th-grader Maggie McLauchlin of Jacksonville, Florida, took a video of what appears to be a black screen as she tried to upload her exam answers as instructed by The College Board. "I'm trying to take the picture but there's just black and I only have 45 seconds left," Maggie says tearfully. "It's not working..."

Jamye Smith is an AP US History teacher at Fort Zumwalt North High School in O'Fallon, Missouri. She told CNN 27 of her students signed up to take the test. So far she's heard from three students who were unable to submit their exams due to a variety of errors, none of which they caused, she said. Smith said her colleagues teaching other subjects also said their students struggled to do the same.
Because of time zone differences, one American student in Japan had to take his four tests at 3 a.m. and 5 a.m. — only to discover that two of them weren't submitted, CNN reports.

"Unfortunately, there isn't another way to submit," the College Board admitted on Twitter, saying they believed the primary cause was outdated web browsers. They told CNN Friday that "After the first few days of testing, our data show the vast majority of students successfully completed their exams, with less than 1 percent [of 1.64 million students] unable to submit their responses..."

"We share the deep disappointment of students who were unable to complete their exam — whether for technical issues or other reasons."

A reader shares a report from Live Science: There's no use sugar coating it: According to one scribe in medieval England, A.D. 1110 was a "disastrous year." Torrential rainfall damaged crops, famine stalked the land -- and, as if that wasn't bad enough, on one fateful night in May, the moon simply vanished from the sky. "On the fifth night in the month of May appeared the moon shining bright in the evening, and afterwards by little and little its light diminished," the unnamed scribe wrote in the Anglo-Saxon manuscript known as the Peterborough Chronicle. "As soon as night came, it was so completely extinguished withal, that neither light, nor orb, nor anything at all of it was seen. And so it continued nearly until day, and then appeared shining full and bright."

So, what made the moon disappear in an already dismal year? According to a study published April 21 in the journal Scientific Reports, the explanation for both the moon's mysterious vanishing act and the rain-ravaged summer that followed may be one and the same -- volcanoes. "The spectacular atmospheric optical phenomena associated with high-altitude volcanic aerosols have caught the attention of chroniclers since ancient times," the study authors wrote. "Careful evaluation of ice core records points to the occurrence of several closely spaced volcanic eruptions," which may have occurred in Europe or Asia between A.D. 1108 and A.D. 1110.

Those volcanic events, which the researchers call a "forgotten cluster" of eruptions because they were sparsely documented by historians at the time, may have released towering clouds of ash that traveled far around the world for years on end. Not only could a high-altitude veil of volcanic aerosols blot out the moon while leaving many stars unobscured, as the Peterborough writer described, but a series of large eruptions could have also disrupted the global climate, the researcher wrote, causing or exacerbated the cold, wet weather that made life so miserable in A.D. 1110. One such eruption, which occurred in Japan in A.D. 1108, could be to blame, the team said.

An anonymous reader writes: You really can't make this stuff up, but Americans across the country, out of fear of "murder hornets," have begun killing all kinds of bees en masse. According to Doug Yanega, senior museum scientist for the Department of Entomology at UC Riverside, a national panic has led to the needless slaughter of native wasps and bees, beneficial insects whose populations are already threatened...

"Folks in China, Korea and Japan have lived side by side with these hornets for hundreds of years, and it has not caused the collapse of human society there. My colleagues in Japan, China and Korea are just rolling their eyes in disbelief at what kind of snowflakes we are..."

"I don't want to downplay this — they are logistically dangerous insects. But having people in Tennessee worry about this is just ridiculous. The only people who should be bothering experts with concerns about wasp IDs are living in the northwest quadrant of Washington (state). And really, right now, nobody else in the country should even be thinking about this stuff," he continued.
"The facts are, experts said, two dead hornets were found in Washington last December, a lone Canadian live nest was found and wiped out last September and no live hornets have yet been seen this year," reports the Associated Press.

And when they spoke to the Washington Agriculture Department entomologist working on the state's response, he issued an additional correction for all the journalists covering this story. "They are not 'murder hornets.' "They are just hornets."

NASA and SpaceX's most defining moment of our current space era is coming up at the end of this month, with its Demo-2 mission on May 27. The mission will be the first ever launch for SpaceX with humans on board, and for NASA, it'll mark the first return to U.S.-based astronaut launches since the Shuttle program flew its last flight in 2011. On Friday, representatives from both SpaceX and NASA briefed the media on the mission and the specifics of what it will involve when astronauts Bob Behnken and Doug Hurley board the Crew Dragon for its debut crewed performance. From a report: The first thing to note about this mission is that it's still technically a test, as noted in the "demo" name. This is the capstone demonstration in a series of such missions that will fully human-rate the SpaceX Crew Dragon and Falcon 9 for operational use. As noted during today's press briefings, a big chunk of the actual human rating process occurs during this final mission -- in fact, the majority of the actual final human rating happens on this flight, despite the many years of preparation and live tests to date, including the Demo-1 mission which was essentially a full round-trip flight, just without any astronauts on board. Even though it's technically a demonstration, the stakes couldn't be higher -- SpaceX has a lot to prove here, and it bears the utmost responsibility in terms of keeping Behnken and Hurley safe for the duration of the mission. Which, it turns out, is actually going to be longer than originally planned: NASA says the mission will last anywhere between 30 days and 119 days, depending on a few different factors, the most significant of which being how quickly the agency ends up being able to launch the first operational Commercial Crew mission, Crew-1, which will carry four astronauts, including two from NASA and one from Japan's space agency.

Nintendo is telling partner developers it's not going to hold one of its Nintendo Direct video events in June. From a report: The publisher has had a June Direct to correspond with E3 (Electronic Entertainment Expo) every year since 2013. And before that, it held annual stage presentations. But complications brought about from Japan's work-from-home order as part of its attempts to mitigate COVID-19 are forcing Nintendo to push back its schedule. Nintendo was putting together a June event. The company was lining up partners and was planning to unveil its first-party schedule for the rest of 2020. That included highlighting the Mario franchise's 35th anniversary, which it's going to celebrate with the release of some classic 3D Mario games on Switch, according to various reports. But now, the company is far less certain. If it holds another Direct, it may not come until the very end of summer.

CNET reports on new research from a threat-intelligence company into the more than 540 domain names registered this month with the word "reopen" in their URL.

While hundreds of them are "designed to lend credibility to anti-lockdown protests," and 98 more were purchased to thwart that effort, there's still many other domains that "come from suspicious sources or resellers looking to make money... Researchers at DomainTools have found hundreds of 'reopen' URLs that were bought specifically to be resold and others that resemble malware campaigns." These are "reopen" websites targeted toward restaurants, movie theaters and sports, and all are set up for sale... "Domainers are a particular type of people who spot any chance they can to hop on a quick buck," said Chad Anderson, senior security researcher at DomainTools. "In any of these instances, there's going to be people who try and pick domains they are able to sell for $5,000 that they bought for $10 because someone wants to start a movement."

DomainTools' researchers also found a batch of links registered in bulk specifically with typos for the phrase "Reopen American Business." All of these domains were registered in China and have misspellings, indicating they're set up to be phishing pages... The idea is to trick visitors who make typos into entering their sensitive credentials on these fraudulent pages. These domains all have servers registered with Bodis, an advertising service that monetizes domain names and has links to a previous malware campaign from the advanced persistent threat (APT) group DarkHotel.

APTs are known groups behind cyberattacks. DarkHotel APT is a hacking group that primarily affects victims in Japan, Taiwan, China, Russia and South Korea. "It looks like it's going to be used for phishing campaigns," Anderson said. "It hasn't been fully activated yet, but it has characteristics of a DarkHotel APT group."
There's also an interesting detail about the first seven "reopen" pages created, which looked like they represented independent groups but were all registered under the name of pro-gun activist Aaron Dorr from Iowa, and redirected visitors to the gun rights groups that were organizing protests to "liberate" their locked down cities. That activist's family also created "reopen" Facebook groups with hundreds of thousands of followers -- which then directed people to the websites. "NBC News found that many of the websites hosted by Dorr were designed to harvest visitors' data, including emails and home addresses."

NBC adds that the group's usual method "is to attack established conservative groups from the right, including the National Rifle Association, and then make money by selling memberships in their groups or selling mailing lists of those who sign up, according to some conservative politicians and activists who have labeled the efforts as scams."

Nintendo has confirmed that about 160,000 Nintendo Network ID accounts have been compromised since the beginning of April. Digital Trends reports: The Japan-based video game company says login ID and password information of these profiles were obtained "illegally by some means other than our service" and in response, it's freezing the ability to log into a Nintendo account through Nintendo Network ID (NNID). Nintendo began looking into a potential breach after several players reported suspicious logins and fraudulent transactions for digital items like Fortnite VBucks through linked PayPal accounts earlier this month. Nintendo's investigation revealed intruders may have accessed personal data such as nicknames, dates of birth, country of residence, and email addresses.

Plus, for users who used the same password for an NNID and Nintendo account, it's warning that their "balance and registered credit card/PayPal may be illegally used at My Nintendo Store or Nintendo eShop." In addition to halting Nintendo Network ID (NNID) logins, Nintendo is reaching out to affected customers via email and resetting their passwords. It's also recommending enabling two-factor authentication to everyone. Despite this, Nintendo is asking users who have discovered fraudulent transactions in their accounts to contact the company so it can cancel the purchases and possibly for initiating refunds.

An anonymous reader quotes a report from Ars Technica: As many as a billion mobile phone owners around the world will be unable to use the smartphone-based system proposed by Apple and Google to track whether they have come into contact with people infected with the coronavirus, industry researchers estimate. The figure includes many poorer and older people -- who are also among the most vulnerable to COVID-19 -- demonstrating a "digital divide" within a system that the two tech firms have designed to reach the largest possible number of people while also protecting individuals' privacy.

The particular kind of Bluetooth "low energy" chips that are used to detect proximity between devices without running down the phone's battery are absent from a quarter of smartphones in active use globally today, according to analysts at Counterpoint Research. A further 1.5 billion people still use basic or "feature" phones that do not run iOS or Android at all. "In all, close to 2 billion [mobile users] will not be benefiting from this initiative globally," said Neil Shah, analyst at Counterpoint. "And most of these users with the incompatible devices hail from the lower-income segment or from the senior segment which actually are more vulnerable to the virus." Ben Wood, analyst at CCS Insight, estimates that only around two-thirds of adults would have a compatible phone. "And that's the UK, which is an extremely advanced smartphone market," he said. "In India, you could have 60-70 percent of the population that is ruled out immediately."

The report adds: "Counterpoint Research is more optimistic, estimating that 88 percent compatibility in developed markets such as the US, UK, and Japan, while about half of people in India would own the necessary handset."

Long-time Slashdot reader DrYak writes: Over 500 scientists, software developers and clinicians joined forces in the COVID-19 virtual Biohackathon to develop new tools for working with the COVID-19 data. The outcomes of the event improved the accessibility of data, protocols, analysis pipelines and provided dedicated compute resources to execute demanding data analysis tasks.

The COVID-19 Biohackathon was an online event from 5 to 11 April, initiated by Pjotr Prins (USA), Tazro Ohta (Japan) and Leyla Garcia (Germany). It had similar objectives and structure as the face-to-face BioHackathons spearheaded in Japan and recently adopted in Europe by ELIXIR. Participants were working in separate groups and presented their activities in a series of plenary webinar sessions. More than 20 different projects joined the event, many of which were led by members from ELIXIR Nodes.

The results from this biohackathon will get mini publications on the preprints server BioHackrXiv

ELIXIR (the European life-sciences Infrastructure for biological Information) is an initiative that allows life science laboratories across Europe to share and store their research data as part of an organised network.

Disclaimer: our group developed one of the deep sequencing analysis bioinformatics pipelines presented there.

I, for one, welcome our new Linux-running, Beowulf-clustered bioinformatics overlords.

According to the DHS's Cybersecurity and Infrastructure Security Agency (CISA), companies that run Pulse Secure VPN servers are still at risk of getting hacked, despite patching vulnerable systems. ZDNet reports: Pulse Secure VPN servers are enterprise-grade VPN gateways that companies use to let workers connect to internal company networks from across the internet. Last year, a major vulnerability was disclosed in these products. The vulnerability, tracked as CVE-2019-11510, allowed hackers to run malicious code on vulnerable servers. [...] According to the [DHS CISA and Japan's Computer Emergency Response Team (JPCERT)], hackers have also been using access to the Pulse Secure VPN server to extract plaintext Active Directory (AD) credentials.

Now, JPCERT and CISA say they're seeing attacks where hackers are leveraging these stolen credentials to access internal networks even after companies patched Pulse Secure VPN gateways. In an alert published yesterday, CISA said it was aware of "incidents where compromised Active Directory credentials were used months after the victim organization patched their VPN appliance." The U.S. agency has released a tool on GitHub for companies that run Pulse Secure VPNs. The tool can be used to sift through their Pulse Secure logs and spot signs of a potential compromise. The tool scans for IP addresses and user-agents known to be associated with groups that have exploited Pulse Secure VPN servers.

Conspiracy theorists have committed more than 30 acts of arson and vandalism against U.K. wireless towers and other telecom gear, reports the New York Times, citing police reports and a telecom trade group.

But what's stirring them up? For starters, over two million people watched a 5G conspiracy video on YouTube last month, the Times notes, adding that the misinformation is also spreading widely through other social media sites: An analysis by The New York Times found 487 Facebook communities, 84 Instagram accounts, 52 Twitter accounts, and dozens of other posts and videos pushing the conspiracy. The Facebook communities added nearly half a million new followers over the past two weeks. On Instagram, a network of 40 accounts nearly doubled its audience this month to 58,800 followers. On YouTube, the 10 most popular 5G coronavirus conspiracy videos posted in March were viewed over 5.8 million times. Today, the conspiracy can be found on Facebook in over 30 countries, including Switzerland, Uruguay and Japan...

"This is nonsense of the absolute highest order," said Julian Knight, a member of Parliament who leads a committee investigating coronavirus-related online misinformation. He said Facebook and YouTube needed to "get a grip" on the situation or risk undermining the crisis response. Mr. Knight added that the spread of 5G conspiracies raised alarms about how information about a future coronavirus vaccine would be disseminated. "If we were to get a vaccine for Covid-19, can we trust the social media companies to ensure that the right public health messages are put out about that vaccine?" he asked...

Facebook, which also owns Instagram and WhatsApp, said it was "starting to remove false claims that 5G technology causes the symptoms of or contraction of Covid-19." YouTube said it would reduce recommendations of videos linking the coronavirus to 5G, while Twitter said it had taken action against misleading and harmful content about the illness.

Telecommunications companies, which have added more security and are working with law enforcement, said the attacks against their workers and equipment had been widespread, threatening communication networks during the crisis.
A YouTube spokesman told the BBC this week that YouTube has toughened its stance against conspiracy theories. "Now any content that disputes the existence or transmission of Covid-19, as described by the World Health Organization and local health authorities is in violation of YouTube policies. This includes conspiracy theories which claim that the symptoms are caused by 5G."

But "Everything about this is senseless," says the head of BT, who points out that most of the attacked phone masks don't even carry the 5G signal.

The number of deaths linked to the coronavirus worldwide has passed 100,000 as known infections surged past 1.6 million, according to data collected by The New York Times. From a report: At least 177 countries have reported cases. The most recent was war-torn Yemen, which reported its first coronavirus case on Friday. The death toll in the United States has surpassed that of Spain, with almost 18,000 fatalities related to the virus reported by Friday afternoon. Only Italy has reported more deaths. Although some governments are considering easing restrictions, lockdowns are being extended across much of the world heading into the Easter weekend, and policing measures stepped up. Tokyo's governor parted ways with Japan's national government by requesting the closure of a range of businesses -- including nightclubs, karaoke bars, gyms and movie theaters -- during a state of emergency declared this week.

China was the biggest source of applications for international patents in the world last year, pushing the United States out of the top spot it has held since the global system was set up more than 40 years ago, the U.N. patent agency said on Tuesday. From a report: The World Intellectual Property Organization, which oversees a system for countries to share recognition of patents, said 58,990 applications were filed from China last year, beating out the United States which filed 57,840. China's figure was a 200-fold increase in just 20 years, it said. The United States had filed the most applications in the world every year since the Patent Cooperation Treaty system was set up in 1978. More than half of patent applications -- 52.4 % -- now come from Asia, with Japan ranking third, followed by Germany and South Korea. [...] According to the WIPO data, China's Huawei, the world's biggest maker of telecoms equipment, was the top corporate patent filer for the third consecutive year.

According to data from the International Renewable Energy Agency (Irena), solar, wind and other green technologies now provide more than one-third of the world's power, marking another record. The Guardian reports: Fossil fuel power plants are in decline in Europe and the U.S., with more decommissioned than built in 2019. But the number of coal and gas plants grew in Asia, the Middle East and Africa. In the Middle East, which owns half the world's oil reserves, just 26% of new electricity generation capacity built in 2019 was renewable. The world has invested about $3 trillion in renewables over the past decade, according to Irena, but annual investments must double by 2030 to tackle the climate emergency.

The Irena data shows the increase in new renewable energy capacity slowed slightly in 2019 - from 179GW to 176GW -- but that new fossil fuel power also fell. The total green energy installed to date around the world grew by 7.6%, with the UK's total rising 6.1%. The UK is now 11th in the world for installed renewables. New solar power provided 55% of the new capacity, most of which was installed in Asia, with China, India, Japan, South Korea and Vietnam leading the way. Other major increases were seen in the U.S., Australia, Spain, Germany and Ukraine. Wind power made up 34% of the total, with almost half in China and significant additions in the U.S. Global wind power capacity remains just ahead of solar, with 95% being onshore turbines. Other green technologies -- hydropower, bioenergy, geothermal and marine energy -- all grew modestly year-on-year. While small compared with solar and wind power, geothermal energy -- tapping the heat of deep rocks -- is growing, with Turkey, Indonesia and Kenya leading the way.

"Averaged over the globe, electric vehicles (EVs) already represent about a 31-percent emissions savings" writes Ars Technica, noting results from a study which also found similar savings from energy-efficient home-heating pumps. "Even in the scenario where these technologies are promoted but the grid isn't cleaned up much, there's a substantial benefit through 2050."

But the researchers also separated the world into 59 regions, then used data on the "greenness" of each country's electricity grids, considering the full range of available vehicle types and home-heating methods as well as their predicted "uptake" of green technologies from 2015 to 2050. And this did identify a handful exceptions, Ars Technica reports: Compare, for example, Switzerland's exceptionally low-carbon grid to Estonia's, which runs primarily on oil shale. Swapping an internal combustion vehicle for an electric one in Switzerland cuts emissions by 70 percent, and a heat pump will cut them by about 88 percent. But in Estonia, an electric vehicle would increase emissions by 40 percent and a heat pump pushes that to an eye-watering 120 percent. A more significant exception can be found in Japan. In the scenarios with little progress on grid emissions, a decade from now, the combination of Japan's dirtier grid and preference for hybrid vehicles means that swapping in EVs doesn't quite pay...

As time goes on, emissions from manufacturing electric vehicles accounts for a larger share of their total life cycle emissions, the researchers note. You can make the vehicle efficient and the grid clean, but you'll also have to clean up industry to keep shrinking that carbon footprint.
The article notes that the researchers also predict continued improvements in the efficiency of electric vehicles -- with an unintended side effect. "As time goes on, emissions from manufacturing electric vehicles accounts for a larger share of their total life cycle emissions, the researchers note.

"You can make the vehicle efficient and the grid clean, but you'll also have to clean up industry to keep shrinking that carbon footprint."