Biologists are quietly rewriting what it means to be alive, and the human body has become one of their strangest frontiers. Inside our cells and microbiomes, researchers are uncovering entities that ...

Add Yahoo as a preferred source to see more of our stories on Google. Many known hominin fossils defy species classification, with the most famous example being the ever-enigmatic Denisovans. A study ...

(Reuters) -Researchers have unearthed tooth fossils in Ethiopia dating to about 2.65 million years ago of a previously unknown species in the human evolutionary lineage, one that lived in the same ...

Long ago, early humans shared the earth with several archaic human species, including Neanderthals and Denisovans. These species, were bipedal and close relatives of modern humans. They lived in parts ...

Modern humans are evolutionary survivors, thriving generation after generation while our ancient relatives died out. Now, new research into our brain chemistry suggests that an enzyme unique to Homo ...