In a cautious new paper, scientists tried to determine whether an interactive speech board might enrich the life of a parrot named Ellie.

Electrical utilities said they weathered earlier conditions as persistent geomagnetic storms were expected to cause another light show in evening skies.

By sequencing an enormous amount of data, a group of hundreds of researchers has gained new insights into how flowers evolved on Earth.

The unusual sight of aurora borealis was visible in several European countries on Friday, and in multiple parts of the United States.

A bioethicist, she pioneered bedside methods for helping patients, their families and doctors deal with anguishing life-and-death decisions in a high-tech age.

The Space Weather Prediction Center said solar activity would be high again on Saturday.