Support Provided ByLearn More

Frozen Frogs

The common wood frog freezes solid every winter and then, come spring, defrosts and mates.
Publish Date: Topic: NatureNatureBrand: NOVA ScienceNOWNOVA ScienceNOW

(This video is no longer available for streaming.) Wood frogs freeze solid in winter then thaw back to life and mate in the spring. How do they do it? Scientists have now figured out how to recreate this extraordinary process of cryopreservation with mammalian organs. To date they have successfully frozen, thawed, and transplanted rat livers and pig hearts. Their dream? Enhanced preservation of human organs for transplant.

Support Provided ByLearn More

Explore More

Funding for NOVA scienceNOW is provided by the National Science Foundation, the Alfred P. Sloan Foundation, and PBS viewers.

National corporate funding for NOVA is provided by Draper. Major funding for NOVA is provided by the David H. Koch Fund for Science, the Corporation for Public Broadcasting, and PBS viewers.