Call of Life
http://www.youtube.com/watch?v=891jvgSdnoU&feature=player_embedded
There's a mass extinction occurring on our planet today. We may well lose half of the world's biological diversity, but do we know enough about what's going on to be scared by? Natural structures that have been solid for millions of years are now in chaos.
Plant and animal numbers are quickly dropping and species are becoming extinct faster than ever before. Scientists have begun to call this a mass extinction event.
Extinction happens, that's a fact. Something like 95% or more of all the life forms that have lived on Earth went extinct naturally. The difference today is that the rate of extinction vastly exceeds the rate of evolution of new species. So over time we've typically had the situation where more species were evolving into being than were going extinct. Today we have a dramatic cutback in what's out there.