Add Yahoo as a preferred source to see more of our stories on Google. Tom Pierce’s hands move with precision as he wraps each black shark’s tooth with wire, laying them in a row on the glass counter.

As Earth shifts to climates not seen for several hundred thousand years, we may need to look at ancient environments for ...

This object is part of the Education and Outreach collection, some of which are in the Q?rius science education center and available to see. These specimens are Mako Shark teeth. These teeth come from ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...