Scientists develop an 'elixir' that reverses a known cause of aging

To date, we know of only two things that can reverse the effects of aging: caloric restriction and extensive exercise. But in a recent experiment, researchers applied a new compound to 2-year old mice, causing their muscles to regenerate to 6-month old levels. Incredibly, human trials may start next year. » 12/20/13 8:40am 12/20/13 8:40am

The Ultimate Symbiosis: Mealybugs have bacteria living inside their…

Lots of organisms rely on symbiotic relationships, in which two species rely on each other for survival and one lives inside the other. But citrus mealybugs enjoy a triply symbiotic relationship unlike any we've ever seen...with one absolutely crucial exception. » 8/14/11 7:00am 8/14/11 7:00am