400: The age in years of frozen moss that University of Alberta researchers resurrected in 2009. Their results challenge the idea that glaciers—such as the one in which the moss was contained—annihilate all plant life.

32,000: The age in years of seeds germinated by Russian scientists in 2012 from a Siberian flowering plant. The seeds were found deep below permafrost, suggesting that our coldest climates harbor untapped stocks of genetic material.