Animals

Cold-Water Fish Break The Ice With Antifreeze

Cold-water fish, snow-dwelling bugs and some grasses have evolved natural antifreeze proteins to avoid turning to ice cubes. Peter Davies, a biologist at Queen's University in Ontario, discusses how these antifreeze substances work, and their applications for human problems--like keeping the ice out of ice cream.

From Canada To Latin America, The Christmas Bird Count Is On

Since 1900, citizen scientists across the Americas have braved bad weather and lack of sleep to participate in the yearly count — essentially, a bird-watching marathon. In the process, these birds have created the world's longest-running database in ornithology and given scientists a great tool for assessing the health of bird populations.

Birding for the Holidays

The Audubon's 113th Christmas Bird Count is underway, and thousands of volunteers are taking part this year. Ornithologist David Bonter, and Gary Langham, Audubon's chief scientist, share tips on which species to look out for, and how even birding beginners can get involved.