Uh-oh.

Anyone who's watched a zombie movie or two knows this can't be good:

Aug. 7, 2007 — Microorganisms locked in Antarctic ice for 100,000 years and more came to life and resumed growing when given warmth and nutrients in a laboratory.

Researchers led by Kay Bidle of Rutgers University tested five samples of ice ranging in age from 100,000 years to 8 million years.

"We didn't really know what to expect. We knew that microorganisms were really hardy," Bidle, an assistant professor of marine and coastal sciences, said in a telephone interview.