The Liaoning Province of China has a reputation as a place where dinosaur fossils turn up on a regular basis, in a remarkably preserved state. Some of them even show the feather patterns.
Did you know that whales once walked the earth and crocodiles were once bipeds? Or that 95% of the bird population was wiped out in the last mass extinction? Or that elephants have grown shorter tusks to survive poachers? For generations, the histories of our planet's greatest creatures were a mystery, but thanks to new fossil finds and modern science, we're piecing it all together. Witness the surprising evolutionary stories of four remarkable creatures and the role humans may play in their next chapters.
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