Biologists are quietly rewriting what it means to be alive, and the human body has become one of their strangest frontiers.

Many known hominin fossils defy species classification, with the most famous example being the ever-enigmatic Denisovans. A study by anthropologists from the Chinese Academy of Sciences and the ...

While new drug molecules are typically tested in vivo in two preclinical species to better understand how they are transported and eliminated by the kidney and assess the risk of renal toxicity in ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Many known hominin fossils defy species classification, with the most famous example being the ...