LiveScience: The largest extinction in Earth’s history not only wiped out 95 percent of sea creatures and 70 percent of land animals, it also gave the oceans a fundamental “face lift,” according to a new study.

Space.com: During these next two weeks we will be presented with an excellent opportunity to view the planet Mercury in the early morning dawn sky

Space.com: A career as a cosmonaut — once the job of a lifetime for millions of Russians — is increasingly less attractive because it is no longer the ticket to fame or fortune.

Science editor Alan Boyle’s blog: Moviegoers got a double dose of new time-travel fiction this week, but sometimes the golden oldies are best.

A small white gull with an ordinary name had bird watchers flocking to the Salton Sea for what they call a “mega-rarity.”

Researchers who are injecting humanity into robotics are creating robots that can connect with humans in a more “thoughtful” way.

David Hanson, who started his career as an artist and spent time working in Disney’s Imagineering Lab, said he flirts with being too realistic for comfort.

Scientists have found a way to boost the protein, zinc and iron content in wheat, an achievement that could help bring more nutritious food to many millions of people worldwide.

Computer simulations and colonists’ accounts are used to trace the course of the “Great Colonial Hurricane” of 1635 — a catastrophe that could conceivably happen again.

An earthquake with a magnitude of at least 4.5 struck off the northwest coast of the Big Island on Thursday in the same area where two stronger temblors struck last month.