Back to Show
Nature
Scientist Profile - John Terborgh
John Terborgh has spent a lifetime studying the Amazon rainforest. He is a world authority on tropical ecology.
Support Provided By
Unlock with PBS Passport
53:56
Horseshoe crab numbers drop as their use as bait by the fishing industry increases.
Unlock with PBS Passport
52:58
The explosion of dog types into the roughly 400 breeds and dogs' role in medical care.
Unlock with PBS Passport
52:59
This film explores how the domestication of dogs might have taken place.