A citizen-led campaign in Berlin is collecting signatures to create a car‑free center in the German capital. Other European cities show what happens when streets are built for people.
The world's largest inland body of water is retreating at an alarming speed. From stranded buildings to vanishing habitats, scientists warn the Caspian Sea may be approaching a tipping point.
Frustrated by blocking coalitions, 50-plus nations at the inaugural talks on exiting fossil fuels made one thing clear: it's all about how — not whether — to phase out coal, oil and gas.
At an unprecedented meeting in Colombia, delegates from more than 50 countries want to chart a practical path to wean the world off fossil fuels. Can they succeed where the UN climate talks have failed?
Nuclear disaster is not just an abstract concept in Ukraine. It is both history and an ongoing threat that is pushing communities to turn to the sun for energy.
Renewable energy is increasingly being used to supply power-hungry data centers. As the sector swells, much of the electricity demand is being met by polluting fossil fuels.