MESSENGER reveals a more dynamic Mercury surface

Compared with Earth, the surfaces of most other objects in the solar system appear largely static. Planetary scientists have long believed that impacts from space debris are the principal source of change on these surfaces ...

Giant viruses build a cell nucleus surprisingly like our own

Humans aren't the only targets for viruses. Like us, bacteria become infected by many types of viruses. In fact, across billions of years, bacteria and viruses have engaged in a non-stop evolutionary arms race for survival ...

4 buildings at observatory in Arizona lost in wildfire

Four non-scientific buildings at the Kitt Peak National Observatory southwest of Tucson were lost in a wildfire, but early indications show other buildings on the property didn't appear to be damaged, authorities said Saturday.

Home sweet home: Research shows pet cats rarely stray far

The domestic cat is one of our most popular pets. In Norway alone, 5.4 million people own approximately 770,000 cats. But where do our four-legged friends go? The cat wants to go outside, you open the door, it leaves and ...

page 3 from 28