This Canadian Cave Has Been Frozen Since the Last Ice Age
Clip: Season 47 Episode 1 | 3m 11s
This cave in Canada remains frozen every summer—and it's been frozen since the last Ice Age 10,000 years ago. What can this tell us about Earth's future climate?
Problems Playing Video?
Major funding for NOVA is provided by the David H. Koch Fund for Science, the Corporation for Public Broadcasting and PBS viewers. Additional funding is provided by the NOVA Science Trust. Major funding for Polar Extremes is provided by the National Science Foundation. Additional funding is provided by the Heising-Simons Foundation, The Kendeda Fund, the George D. Smith Fund, and the Richard Saltonstall Charitable Foundation. This material is based upon work supported by the National Science Foundation under Grant No. 1713552. Any opinions, findings, and conclusions or recommendations expressed are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.