01:38
The Delicate Balance, Part 2: Species Loss
Humans have altered the habitats of life forms from microscopic to whale-sized. General estimates of species loss is tens of thousands of species per year.
01:43
The Delicate Balance, Part 2: Climate Destabilization
Global climate change is believed to be created by excessive amounts of carbon dioxide in the atmosphere. While El Niño is not a reflection of climate change, it does demonstrate the results of unpredictable or unstable weather conditions. Climate...
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.