Tooth truth: How ancient climate change helped shape our teeth

In this week's Riskin Report on CTVNews.ca, Dan Riskin looks at how we can thank ancient climate change for the shape of our teeth.

No, really.

A fossil recently discovered in Utah sheds light on when and why early mammals developed teeth that are distinct from those found in some other species.

CTV News Science and Technology Specialist Dan Riskin chews the fat on this evolutionary adaptation, and explains its connection to climate change, in this week's Riskin Report.

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