How much Have We Evolved in the Last 200 Million Years?

Discovery News' Larry O'Hanlon has a great story up in the Dinosaur section on new insights into how a mass extinction at the end of the Triassic period led to the rise of dinosaurs.

In it there's a very dramatic picture from the New Mexico Museum of Natural History that depicts an ancient crocodile locked in combat with an early dinosaur:All well and good -- life on the streets of prehistory was raw.

You'd think humans would've learned from our ancient ancestors' missteps. But last week, Rob Morris a member of the species Homo sapiens -- evidently protesting loudly against his self-preservation instinct -- was reliving prehistory during the first ever Freestyle Alligator Wrestling Championships in Florida:

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