Toby, an orphaned four-year-old Alaskan coastal brown bear, stands and looks out over the compound at the Fortress of the Bear Center in Sitka, Alaska, on Aug. 1, 2013. Charles Rex Arbogast/AP hide caption
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Thursday
Rosy-faced lovebirds (Agapornis roseicollis) are small parrots that are common and colorful household pets. Parrots such as these use unique yellow and red pigments whose expression researchers now show can be modulated through the action of a single enzyme.
Pedro Araujo
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People walk through flooded streets in Valencia, Spain, on Wednesday. Alberto Saiz/AP hide caption
Wednesday
A 2005 electron microscope image shows an avian influenza A H5N1 virion. A pig at an Oregon farm was found to have bird flu, the U.S. Department of Agriculture said Wednesday. Cynthia Goldsmith, Jackie Katz/CDC/AP hide caption
Lots of mammals scream. Conservation biologist Dan Blumstein says those screaming sounds happen when an animal overblows their vocal folds, pushing air out much faster than normal. Getty Images | mlorenzphotography hide caption
What do horror movies and marmots have in common? Screams
Omerserik Ibragimov heads out to put his nets in the water for fish on the Aral Sea in Kazakhstan. Claire Harbage/NPR hide caption
A Long March rocket with a Shenzhou-19 spacecraft atop takes off from the Jiuquan Satellite Launch Center in Jiuquan, northwestern China in the early hours of Wednesday, Oct. 30, 2024. Ng Han Guan/AP/AP hide caption
Tuesday
Members of the Nuclear Emergency Support Team training for a radiological contamination scenario. For 50 years, the secretive team has been the first line of defense against nuclear emergencies. NNSA hide caption
In his book Why We Die, author Venki Ramakrishnan looks at modern biological research to understand why our bodies age — and eventually die. "It's a peculiar situation because we're a collection of cells and when we're alive, millions of our cells are dying. ... When we die, most of our cells are still alive," says Ramakrishnan. "And so what does it mean to say you die?" cooperr007/Getty Images hide caption
Monday
Box turtles are one of many species looked after by the Turtle Conservancy. The group cares for illegally trafficked turtles once they're confiscated. Nathanael Stanek/The Turtle Conservancy hide caption
In a secret location in New Jersey, a turtle whisperer cares for trafficked animals
If you picked up a Honeycrisp apple at a grocery store in New York... and then a Honeycrisp in Texas... and then a Honeycrisp in California... they'd all be the exact same genetically. That's because they're all from the same original plant. Stan Dzugan/Getty Images hide caption
Baking the perfect pie is an art. So is breeding the perfect apple
Saturday
In 1938, a partial excavation of a well revealed a man’s skeleton — possibly that of a dead man thrown down the well in the 12th century. Riksantikvaren (The Norwegian Directorate for Cultural Heritage) hide caption
Centuries-old remains found in a well may be man from Norse saga
Friday
An artist's rendition of 17-year-old Esther Granger, who died in 1866 in Merrillville, Ind. A property owner discovered her skull in the walls of a home he was renovating in Batavia, Ill., in 1978. Kane County, Ill., Coroner's Office/AP hide caption
Official SpaceX Crew-8 portrait with (L-R) Roscosmos cosmonaut and Mission Specialist Aleksandr Grebenkin, and Pilot Michael Barratt, Commander Matthew Dominick, and Mission Specialist Jeanette Epps, all three NASA astronauts. Bill Stafford/NASA hide caption
Inside his lab, David Sischo and his team care for 40 species of snails. For some snails, it's the only place they live, having been brought into captivity to stave off extinction. Ryan Kellman/NPR hide caption