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  • Massachusetts cities are quickly embracing new emission-slashing building code option

    The Massachusetts state government introduced a new building code, called the specialized stretch code, to set new construction up for decreased fossil fuel use. It’s an opt-in code, so municipalities vote on whether to adopt it, and many have.

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  • How a Technology Similar to Fracking Can Store Renewable Energy Underground Without Lithium Batteries

    Three startups in Houston are using a technique similar to fracking, a practice used in the oil and gas industry, to store renewable energy without batteries. They use excess renewable energy to pump pressurized water into manmade caverns underground. When energy is needed, they open the caverns, sending the water back to the surface to turn a turbine and generate power.

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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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  • First-in-the-Nation Geothermal Heating and Cooling System Comes to Massachusetts

    A utility company in Framingham, Massachusetts, worked with climate advocates to build a unique geothermal heating and cooling project that spans a whole neighborhood. A group of residential and commercial buildings share the infrastructure necessary to harness stable underground temperatures for heating and cooling, which reduces their greenhouse gas emissions and energy bills.

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  • St. Paul Public Schools go big on geothermal energy, using the earth to heat and cool buildings

    Public schools in St. Paul, Minnesota, are installing geothermal systems to heat and cool buildings with energy harnessed from underground temperatures. The efficient, affordable energy source allows them to keep school buildings at a comfortable temperature during the increasingly warmer summer months.

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  • Giant Batteries Are Transforming the Way the U.S. Uses Electricity

    California and Texas are among the states in the U.S. installing giant lithium-ion batteries to store renewable energy to use when the sun isn’t shining and the wind isn’t blowing. These batteries are reducing the use of fossil fuels as a backup energy source when demand is high.

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  • AC Has a Big Climate Impact. This New Tech Could be a Game Changer

    Thermal storage technologies are lowering businesses’ energy costs and carbon emissions while reducing strain on the grid during peak times. Two hotels in California implemented a system that makes ice when energy demand is low and uses the ice during peak demand times to cool the building.

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  • Why Europe is dismantling its dams

    Researchers and conservationists in European countries like Finland are buying obsolete dams and dismantling them to allow river ecosystems to recover and fish to travel freely.

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  • Getting off fossil fuels is hard, but this city is doing it — building by building

    The town of Ithaca is working with its local gas utility and area homeowners to reduce greenhouse gas emissions by removing gas pipes from homes and businesses by switching them over to electricity, primarily from renewable sources. While the transition is a long process, the town expects to achieve about a 30% reduction in emissions in the next year.

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