Researchers have examined the genomes of 240 mammal species. The project reveals when mammals evolved, how some developed the ability to hibernate, and clues that may help explain humans' brains.

The work is part of a years-long effort to get an accurate count of how many people were killed when a white mob decimated the city's prosperous Greenwood enclave, leaving upward of 300 people dead.

Federal officials say they've arrested a 29-year-old Wisconsin man in connection with the May 2022 incident. They found him with the help of forensics and fast food.

The state's attorney general's office said officers would present to suspects documents with forged letterhead and contact information and, in two cases, a signature from a made-up employee.

Researchers who detected environmental DNA, or eDNA, in two zoos say the technique could one day be used to look for endangered species in remote locations in the wild.