(AP)—Stewie the Cat, the longest domestic cat in the world at more than 4 feet (1.2 meters) long from nose to tail, has died.

Biology - Plants & Animals

Feb 05, 2013 2.2 / 5 (10) 8

What happens when two proteins join together? In this case, they become like a power couple, where the whole is greater than the sum of the parts.

Medicine & Health - Cancer

Jan 27, 2011 4.3 / 5 (3) 1 |

Specific cells within the immune system could help explain why younger people are more susceptible to variant CJD, scientists believe.

Medicine & Health - Medical research

Oct 14, 2009 5 / 5 (3) 0