A Eurasian nuthatch.

When scientists recently analyzed hundreds of studies of ecosystems, they were surprised to see a marked slowing in the rate of species turnover. If new species don’t replace old ones, they say, ecosystems may have less flexibility to respond to habitat loss and climate change.

By Fred Pearce

Energy

How Ukraine Is Turning to Renewables to Keep Heat and Lights On

Russia continues to bomb Ukraine’s fossil-fueled power plants, leaving much of the nation shivering during a brutal winter. But Ukraine’s new emphasis on developing decentralized power — from solar panels to wind turbines — is advancing an unexpected green energy transition.

By Paul Hockenos

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A coal waste site in Russellton, Pennsylvania.

Solutions

In Hunt for Rare Earths, Companies Are Scouring Mining Waste

Tailings and acid mine drainage from mines contain critical minerals needed for clean energy technologies. Now, researchers are developing new techniques for retrieving these key metals, which could reduce the need for new mines and help clean up pollution at old mining sites.

By Jim Robbins

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