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  • Treetop sensors help Indonesia eavesdrop on forests to cut logging

    In Indonesia, there are 27 “Guardian” sensors eavesdropping on forests as a way to monitor them for cases of illegal logging. The organization Rainforest Connection uses artificial intelligence to analyze the audio from these sensors and if the system picks up the sound of a chainsaw, it sends a mobile alert to community patrols in the area. This technology can be scaled for other parts of the world and habitats. “We're basically building a nervous system for the natural world," says Topher White, founder of the nonprofit.

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  • Electric car batteries with five-minute charging times produced

    Batteries that can be fully charged in five minutes have been created for the first time, allowing electric cars to recharge faster. The Israeli company StoreDot produced 1,000 of these new lithium-ion batteries, which can be recharged for 1,000 cycles while retaining 80 percent of the original capacity. It could be a few years before they are mass produced, but the CEO of the company says that this feat “demonstrates it is feasible and it’s commercially ready.”

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  • In South Bend, Pete Buttigieg challenged a decades-old assumption that streets are for cars above all else

    Reconfiguring streets to slow automobile traffic through its downtown business district and encourage pedestrians and bicycling enlivened South Bend's street life and proved a boon to its restaurants and other businesses. Then-Mayor Pete Buttigieg pushed for the $25 million plan to make the streets safer and encourage people to spend more time and money in the area. Drivers complained about increased travel time, as they have about other cities’ “complete streets” programs. But Buttigieg and his supporters hope to push the concept when he runs the federal Transportation Department.

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  • The U.S. Could Make New Cars a Lot Less Deadly

    American cars made since the early 1980s have carried ratings from the federal New Car Assessment Program, showing how risky they are to human life in a crash. NCAP ratings motivated a host of safety enhancements by manufacturers. Since the 1990s, similar programs in the European Union, China, Australia, Korea, and Japan have also rated vehicles' risks to pedestrians and bicyclists, and their fatalities have dropped. Not so in the U.S., where industry resistance has stalled expansion of NCAP ratings. Advocates hope the Biden Transportation Department will finally expand the program.

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  • How sunshine can make the railways greener

    As a way to reduce the amount of diesel fuel that powers trains, governments and transit companies around the world are turning to solar panels as a way to utilize renewable energy. In Australia, a solar train launched in 2017 that uses lithium-ion batteries that are charged by solar panels on the roof of the carriages. And a rail line in the United Kingdom uses energy from a solar farm to keep the train running. Scaling solar panels for nation-wide transit systems can be challenging, but many countries are committed to eliminating the use of fossil fuels on their rail networks.

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  • A pollution solution where the rubber meets the road

    The Tyre Collective, a project by four recent graduate students in London, is seeking to capture vehicle tire pollution, the microplastics that go into the air from the friction of tires. They have been developing a device that attaches to the bottom of a car and uses electrostatic charges and airflow to collect up to 60 percent of tire particles as the car is driven. To reduce the amount of tire pollution, tire companies are seeking to balance safety requirements, tire durability, and making them out of more sustainable materials.

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  • Snowsheds are just one part of Rogers Pass' extensive avalanche program

    Snowsheds are just one tool in Canada’s arsenal to combat the impacts avalanches can have on their complex road systems. Snowsheds are aboveground tunnels where snow can travel over it and into the river, thereby reducing the number of road closures to cleanup the aftermath and allowing thousands of drivers to continue on their journeys. This idea is being explored by state officials in Wyoming as a way to improve their avalanche-mitigation tactics.

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  • A world without avalanche closures

    A failed bridge construction project in the 1960s in Wyoming to mitigate the impacts of avalanches inspired Washington state to complete a similar project fifty years later. The project included an elevated bridge that allows snow from slide paths to pass beneath the roadway, which ends up saving losses of economic activity due to road closures. While the construction can be expensive, Wyoming is looking to see if a similar solution can be applied to their own mountain passes.

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  • Kenyan engineers recycling plastics for bricks

    Gjenge Makers Ltd is an alternative building product manufacturing company that creates products – such as pavers and blocks – out of recycled plastics. Founded by four Kenyan engineers, the team began by studying the manufacturing process and researching what products would do well on the market. They then built all of the machinery themselves, which break down the plastics, and then mix them with other building material products to ultimately create customizable plastic bricks that can withstand larger weight and are less expensive than concrete. They are popular in rural and lower-income areas.

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  • As Concerns Over Climate Change Rise, More Developers Turn to Wood

    Eastern Washington University recently built the first tall wood office building in the state joining hundreds of other large “mass-timber” projects in the United States. This growing industry constructs panels, beams, and columns from trees that need to be thinned to curb wildfires in forests. While wood buildings can be more expensive to build than ones constructed from concrete and steel, environmentalists are on board because wood can store carbon, which can help offset greenhouse gas emissions.

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