Nature's engine is grinding to a halt

A study published in Nature Communications in February found that species turnover — the rate at which ecosystems swap old species for new ones — has decelerated by roughly one-third since the 1970s across land, freshwater, and marine habitats. The finding inverts expectations: as climate change accelerates, ecosystems aren't changing faster. They're changing slower. Lead author Dr. Emmanuel Nwankwo named it precisely: "Nature functions like a self-repairing engine, constantly swapping out old p ...