A worker carries used drink bottles and cans for recycling at a collection point in Brooklyn, New York. Three decades of recycling have so far failed to reduce what we throw away, especially plastics.
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Black or brown hydrogen is extracted from coal. Gray hydrogen is made by heating natural gas. Both create carbon dioxide. Blue hydrogen captures about 90% of that carbon dioxide and stores it, usually underground. Green hydrogen uses renewable energy to split hydrogen out of water using electricity. Pink hydrogen does the same but relies on nuclear power.
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In 2021, Hurricane Ida cut a path of destruction from the Gulf Coast to the Northeast. Vehicles parked in Philadelphia were submerged after the storm brought torrential rain.
A sign reads "Danger Extreme Heat Conditions Ahead" in Anza-Borrego Desert State Park, which is threatened by climate change, on March 23 near Borrego Springs, Calif.
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