Anxiety drugs found in rivers make salmon take more risks New research suggests that pharmaceutical pollution can change the behavior of salmon in the wild. Jonathan Lambert
A new study finds crows can recognize geometric shapes A new study shows that like humans, crows can recognize geometric regularity, making them the first nonhuman animal known to have this ability. Nell Greenfieldboyce
Aging former research chimps move to Chimp Haven All of the former research chimpanzees that had been living on an Air Force base in New Mexico have finally arrived at a sanctuary in Louisiana. Many of these chimps are in their 50s and 60s. Nell Greenfieldboyce
Doggles and dog booties: Anchorage residents prep pets for volcanic explosion Mount Spurr, which scientists say is likely to erupt in the coming weeks or months, is about 80 miles west of Anchorage. But ash clouds could reach the state's biggest city. Nathaniel Herz
Four critically endangered Galápagos tortoises hatch at the Philadelphia Zoo The birth of tortoises native to Santa Cruz Island in the Galápagos increases their U.S. population from 44 to 48. A few thousand remain globally, according to estimates by experts. Ayana Archie
Coyotes are here to stay in Seattle's urban core. So how can we coexist? Coyote interactions are on the rise in Seattle. Some neighbors are afraid, while others say it's just part of living in a green city. So, are coyotes a new threat — or a new normal? Casey Martin
A biotech company says it has bred three pups with traits of the extinct dire wolf Colossal Biosciences says it used novel gene-editing technology to alter gray wolf DNA to breed the animals. Dire wolves recently featured prominently in the HBO series Game of Thrones. Joe Hernandez
What we know about the big bee die-off this year This year, commercial beekeepers in the U.S. lost about 60% of their bees – more than double average losses. What do those losses mean for beekeepers, and what do we know about the cause? Kerry Klein
People are buying PPE for pets to protect dogs against volcanic ash in Alaska Mount Spurr in Alaska is likely to erupt soon. So people are buying goggles and masks to protect themselves from ash — and also pet versions to protect their dogs. Nat Herz
The Mason bee has become the unsung hero of the honey bee population Honey bee populations are again declining, threatening crops. NPR's Scott Simon talks to Dave Hunter, who raises the unsung hero of the orchard (and champion pollinator), the Mason bee. Scott Simon