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How does a species become extinct?
How can evidence of evolution be found in stone?
What killed the dinosaurs?
There have been five mass extinctions on Earth - will humans cause the sixth?
Find out why an astounding number of animal species are under threat of extinction.
The story of one of the most complete dinosaur skeletons ever found.
Discover why there are so many more tigers in captivity than in the wild.
Find out why the Tasmanian devil is fighting for its life and facing extinction...