Some of the most massive and influential stars in the universe are OB stars. These blue giants, many times more massive than ...

Massive volcanic eruptions on the Indian peninsula have long been proposed as an alternative cause for the demise of the dinosaurs. This phase of active volcanism took place in a period just before ...

Everyone knows that dinosaurs are extinct, and most people have some idea about how it might have occurred. But the exact periods in history when it happened are less well known. Was it a single ...

A meteorite hit Earth about 66 million years ago near what today is the Yucatán peninsula, causing widespread destruction and death. But almost simultaneously, intense volcanism covered a vast area of ...

Earth responded to its most severe past warming event by evolving a new and bizarre type of photosynthesis that allowed a ...

Add Yahoo as a preferred source to see more of our stories on Google. Even bivalves looked different during the time of the dinosaurs, as these fossils of an ultra-fortified oyster, left, and armored ...

(CNN) — A cataclysm engulfed the planet some 252 million years ago, wiping out more than 90% of all life. Known as the Great Dying, the mass extinction that ended the Permian geological period was the ...

As monotremes, unusual traits like egg-laying may have helped secure the lineage during the extinction event that erased countless others. Platypuses survived by living small, and being rightly placed ...

Massive volcanic eruptions on the Indian peninsula have long been proposed as an alternative cause for the demise of the dinosaurs. This phase of active volcanism took place in a period just before ...