01:51
Species Loss and Environmental Problems
Paul Ehrlich, best known for his work on population growth, observes that species and diversity loss is the most irreversible of our environmental problems and should be getting much more attention.
05:36
Ecology: Biosphere 2: Studying Extinction First-hand
The accidental introduction of a common greenhouse ant into Biosphere 2 resulted in the loss of their pollinators. The impact of the loss was felt immediately in the miniature biosphere. The size of the earth and the redundancies that exist in the s...
01:29
Impact From Loss of Biological Diversity
Paul Ehrlich, best known for his work on population growth, observes that it's difficult to predict whether the loss of biological diversity will hit us suddenly and very hard, or if the effects will be played out more gradually.