The world and its ecosystems have been around for a long time — so long that the first mass extinction occurred “just shy” of ...

Around 252 million years ago, the world suddenly heated up. Over a geologically brief period of tens of thousands of years, ...

A DVD formatted for the NTSC market. Prior to digital television, NTSC and PAL were the two major analog TV formats, each with different frame rates and lines of resolution. When DVDs were ...

Researchers have determined that the Great Dying, the mass extinction event that occurred 252 million years ago was likely ...

Increasingly, researchers are doing the numbers, and saying, yes, if present trends continue, a mass extinction is very likely underway. The evidence is pieced together from details drawn from all ...

A new study links the largest mass extinction, which occurred 252 million years ago during the Permian-Triassic period, to ...

Let’s start with a clear definition of what constitutes a mass extinction. Unlike regular extinctions, which occur at a steady background rate — about 10% of species lost every million years — mass ...

“This mass extinction event in the Ordovician, this happened hundreds of millions of years before the first dinosaurs ever evolved,” said David Wright, an assistant curator at the Sam Noble Museu ...