For thousands of years, the inhabitants of the Brazilian rainforest have been using medicinal plants. But this knowledge is in danger of disappearing. Leticia Yawanawa has an ambitious plan ...

And it's home to countless deadly threats. From poisonous plants to ferocious predators, the Amazon rainforest is not the kind of place you'd ever want to get unexpectedly lost. If you were to be ...

Most of us have heard of the Amazon Rainforest ... among the most poisonous animals we know. The source of their toxicity is unknown, but scientists assume that it may be from plant poisons ...