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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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  • The Smart, Cheap Fix for Slow, Dumb Traffic Lights

    Google’s Green Light project uses data from internet-connected vehicles and navigation apps to adjust the timing of traffic lights to be more responsive to real-world traffic patterns. The project is already in operation in several cities — from Hamburg to Seattle — and data in those cities suggest the system yields a 30% decrease in stop-and-go traffic at intersections.

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  • This self-taught innovator in Nigeria upcycles e-waste into power banks

    Zang Technologies creates portable chargers out of recycled materials, having sold 21,000 power banks since 2018. The chargers are compatible with a variety of devices, including smartphones, and offer sustainable power that also helps reduce waste by recycling electronics and turning them into alternative power sources.

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  • 'Valuable and largely overlooked': Interest in virtual power plants grows

    Utility companies across the United States are using virtual power plants to meet electricity demand, access backup power, and lower the electric bills of participants. To make these power plants work, the utilities use energy from the battery storage systems of customers who have home solar arrays.

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  • Light at the End of the Tunnel

    Communities in the United States are slowly replacing small culverts that alter the flow of streams and block the paths of migratory fish species with wider culverts and bridges, allowing the ecosystems to recover.

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