"We are at the precipice of the end of the world!" says Chera Van Burg of Species Alliance.

CBS5.com of San Francisco has a detailed article and video report on the current theory that a new mass extinction is beginning. The report uses the Baiji Dolphin as a prime example. It also says that the Congo gorilla population has declined 90 percent since 2002, because of land clearance for Coltan mining, a mineral used in the manufacture of cell-phones.

There is widespread belief among scientists that current species of life are becoming extinct at a rate more than 1,000 times higher than normal.
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"According to a consensus of the world's biologists, a mass extinction is unfolding or about to unfold on planet Earth," said David Ulansey of Massextinction.net.
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Biologists believe the six major causes of the present mass extinction are habitat destruction, invasive species, pollution, human overpopulation, human overconsumption, and climate change.

Full story and video report at CBS5.com.