Explores the ways in which scientists research polar bears in Alaska, following biologists as they locate bears from a helicopter, tranquilize them, give them tattoo identification numbers and tags, gather data, and collect samples.
Recounts a journey through the Amazon River Valley, describing some of the traditional ways of life that still exist there and the encroachment of colonists that threatens the rain forests.
Recounts a journey through the Amazon River Valley, describing some of the traditional ways of life that still exist there and the encroachment of colonists that threatens the rain forests.