Photo: Antifreeze-Like Blood Lets Frogs Freeze and Thaw With Winter's Whims



Wood frogs (Rana sylvatica), such as this Alaska native, can create an antifreeze-like solution in their blood that lets them literally freeze and thaw in winter with no ill effect.

Scientists hope that better understanding this rare ability will help create methods for minimizing damage to organs that are put on ice before being used in human transplants.

Photograph by Michael S. Quinton/NGS


NEWS FEEDS    After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed. After installing a news reader, click on this icon to download National Geographic News's XML/RSS feed.

Get our news delivered directly to your desktop—free.
How to Use XML or RSS

ADVERTISEMENT

NATIONAL GEOGRAPHIC'S PHOTO OF THE DAY

50 Drives of a Lifetime

Listen to your favorite National Geographic news daily, anytime, anywhere from your mobile phone. No wires or syncing. Download Stitcher free today.