40 year old bone revisited using modern technology

chippy

The results are surprising.

http://www.bbc.co.uk/news/science-environment-15391388

It seems man was around long before the clovis in North America.

So much for the young earth theorists.

The timing of humanity's presence in North America is important because it plays into the debate over why so many great beasts from the end of the last Ice Age in that quarter of the globe went extinct.

Not just mastodons, but woolly mammoths, sabre-toothed cats, giant sloths, camels, and teratorns (predatory birds with a nearly four-metre wingspan) - all disappeared in short order a little over 12,700 years ago.

Darth Beaver

This is just one more reason to question science in all of it's findings at all times.

chippy

Nothing in science is concrete. The world around us changes daily as our knowledge increases. Science is a developing subject, that's why they are all theories. It's a rare scientist that reports a fact.