How worms shaped Earth's biodiversity explosion

One of Earth's most consequential bursts of biodiversity—a 30-million-year period of explosive evolutionary changes spawning innumerable new species—may have the most modest of creatures to thank for the vital stage in ...

Nepal court orders limit on Everest climbing permits

Nepal's Supreme Court has ordered the government to limit the number of mountaineering permits issued for Everest and other peaks, a lawyer confirmed Friday, just as expeditions prepare for the spring climbing season.