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 ...

“This study demonstrates that eggshell biocalcite from non-avian dinosaurs, birds, and other egg-laying vertebrates has the ...

Image: Tiny crystals called zircons are used to date oceanic crust. A newly developed method that detects tiny bits of zircon in rock reliably predicts the age of ocean crust more than 99 percent of ...

Researchers used three different methods to date the site, challenging the preexisting notion of the site being between 1.2 and 1.6 million years old.