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It's death on an unimaginable scale, when a majority of Earth's species quickly die out. It's called "mass extinction," and it's happened at least five times before. Cataclysms, such as supervolcanoes or asteroids, are t
The first feature-length documentary film to fully investigate the growing threat to Earth's life-support systems from the loss of biodiversity. If current trends continue, scientists warn that half or more of all plant