Follow a group of explorers and scientists as they travel to Papua New Guinea to find a type of kangaroo that lives in trees.

Tyrone Hayes works to discover the effects pesticides have on frogs and, in turn, us.

Learn about the efforts being made to save the cheetah.

"In the 1990s, scientists lived inside Biosphere 2 (Biosphere 1 is the Earth itself) for two years, trying to figure out if colonizing Mars would ever be possible. Now scientists don't live there but instead conduct all sorts of studies and experiments aimed to help us better understand our environment and especially understand what sort of things are happening to it due to climate change and other man-made problems. It's a unique take on the Scientists...

Publisher Annotation: In this exhilarating installment of the award-winning Scientists in the Field series, journey to the isolated islands of Isle Royale National Park where the longest predator/prey study in the world is being conducted along with a controversial genetic rescue to save not only the wolves and moose, but the entire island ecosystem.