DNA could only survive 100,000 years in icy environment, but other proteins such as collagen probably completely degrade in less than 30,000 years Poinar, H. N., Höss, M., Bada, J. L., and Paabo, S. 1996. (religion.blogs.cnn.com)
Studying ice cores has provided a way to examine the biology of icy environments buried beneath kilometers of ice for millions of years. (sciencedaily.com)
More than two months have passed, and our lensmen met with the Clubman once again, this time in a less icy environment. (topspeed.com)