In this video Paul Andersen shows you how to obtain, evaluate and communicate information in a mini-lesson on obtaining and combining information. Two examples are included in the video and two additional examples are included in the...

Sharks wouldn’t be known for their fierce teeth today if it weren’t for their ancient scales.

Seventeenth-century Danish geologist Nicolas Steno earned his chops at a young age, studying cadavers and drawing anatomic connections between species. Steno made outsized contributions to the field of geology, influencing Charles Lyell,...

Shark teeth contain fluoride, the key ingredient in most toothpastes, according to the study, recently published in the Journal of Structural Biology. The enamel of shark teeth contain the mineral fluoroapatite, instead of...

On this episode of Beyond Dinosaurs, Coyote and Mario have teamed up once again with PaleoCris and Fossil Rick! They're back in a top secret location in Florida and splitting into two teams to find SHARK TEETH! So, what kind of shark...

A jawful of sharp, serrated teeth provides rare evidence of a similarly ferocious mega-shark that once stalked the ancient waters down under.