Researchers continue to build on a body of evidence for a fragmented comet that is thought to have exploded over Earth almost ...

Michael VanEtten, 46, has been combing Florida rivers and streams for fossils most of his life. His latest find—a mound of teeth shared in the r/sharkteeth Reddit community—were deposited by a variety ...

Scientists believe intriguing leopard spots on a rock sampled by the Perseverance rover on Mars may have potentially been ...