One of our most contentious debates may now have an answer. Dogs, it turns out, have about twice the number of neurons in their cerebral cortexes than what cats have, which suggests they could be ...

OpenAI's hugely popular chatbot fields a staggering number of queries from users every day.

At 18, Katie Stubblefield lost her face. At 21, she became the youngest person in the U.S. to undergo the still experimental surgery. Follow her incredible story. Sixteen hours into a transplant ...