Despite seeming like a relatively stable place, the Earth's surface has changed dramatically over the past 4.6 billion years. Mountains have been built and eroded, continents and oceans have moved ...

Fossils can reveal traces of an ancient world, but their exact age is not always easy to discern. Palaeontologists have traditionally relied on a range of methods to date fossil sites, some more ...

A team of paleontologists from the University of Texas at Austin spent nearly two years snorkeling and crawling through a water-filled cave on private land in Comal County, Texas, collecting fossils ...