Until recently, scientists could not fully explain how the second law arises.

Let scientists explain the event that produced the source of the new light, a supernova.

The scientists, he said, explained that the bird needed further study.

Over the years, social scientists have explained the phenomenon of group cohesiveness in different ways.

"I accessed the original blueprints before the meeting," the scientist explained.

As scientists explain the events of Dec. 26, almost unbelievable statistics come one after another.

Those early scientists could not explain how the brain creates such sensations, or body schemas.

A scientist explains how and why we think.

But even the most gifted scientist on the planet cannot explain why people sleep.

The scientist had explained it to Cierto with a kind of delight.