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  • Abandoned Coal Mines Are Becoming the Batteries of the Future

    Gravity batteries can store excess renewable energy in abandoned mine shafts, offering coal-dependent communities economic and environmental benefits. This energy storage tactic is being used in various iterations around the globe.

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  • Green Microgrids Are Powering a More Resilient Future

    Microgrids, small-scale energy systems that can operate either independently or as part of the larger electric grid, are growing in popularity and effectiveness. In one example on tribal land in California, a microgrid saves 25 percent of electricity costs and reduces Blue Lake Rancheria's carbon footprint by hundreds of tons of carbon annually.

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  • Nimble Electric Trucks Are Supercharging African Trade

    In Rwanda, a fleet of simple, efficient trucks is helping farmers get their harvest to market before the goods spoil. For one farmer renting space in one of the trucks, the improved market access enabled them to go from selling 400 to 4,000 kilograms of produce a week.

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  • How to build an AC that will get the world through hotter summers

    Innovators are developing new air conditioning units to keep people cool as temperatures and humidity rise without contributing to greenhouse gas emissions. Alongside improved energy efficiency, the new tech focuses on sensing and reducing humidity in real-time and adjusting itself as humidity fluctuates throughout the day.

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  • How Asia's 5,000-year-old rice terraces are inspiring modern flood control

    Architects across Asia are taking inspiration from a traditional form of agriculture called rice terraces to create flood-resilient infrastructure in cities that lack places for excess water to go. In Bangkok, for example, a university’s roof mimics the step-like design, and the water it holds is used to grow rice.

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  • How Frankfurt Harnesses Local Wind Currents for Urban Cooling

    Frankfurt is changing the way it designs its buildings to adapt to extreme heat. The city works with urban climatology researchers to ensure new housing and skyscrapers won’t impact the wind corridors that keep residents cool, and it promotes practices like installing green roofs.

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  • A New Wildlife Crossing Provides Safe Passage Over a Busy Interstate

    Environmentalists, biologists, wildlife advocates, and even ski clubs formed the I-90 Wildlife Bridges Coalition to push for wildlife crossings to be a part of a massive construction project on Washington’s heavily trafficked Snoqualmie Pass. The Department of Transportation took notice. It's working with other government agencies and wildlife experts to install bridges and tunnels designed for animals of all sizes to safely cross the road.

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  • Hoboken's resiliency parks fight flooding but come with a big price tag

    Resiliency parks in Hoboken, New Jersey, look like typical playgrounds and basketball courts. Unlike the average park, they have discrete drains and sit on top of underground tanks that prevent flooding by holding millions of gallons of rainwater.

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  • California Is Showing How a Big State Can Power Itself Without Fossil Fuels

    The California-based startup Magrathea Metals is producing magnesium with renewable energy to make the process less expensive and material-intensive. The company aims to make the more environment-friendly metal competitive with steel and aluminum.

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  • Tidal kites: New technology harnessing ocean energy

    The renewable energy technology company Minesto developed tidal kites that generate electricity from ocean tides. The machines are attached to the seabed and pushed through the water in a figure 8 pattern. The movement spins a turbine that generates electricity.

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