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"mammal"
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Lesson Plan
It’s Sedimentary, My Dear Watson
In this introductory activity, students analyze core sample data to identify...
Mon, 03/15/2010 - 14:56
slideshow
Backbone of Biodiversity at Risk
The International Union for the Conservation of Nature (IUCN) maintains the...
Thu, 10/28/2010 - 19:01
slideshow
Weird, Wacky, Wonderful Sharks
Saw sharks and frilled sharks and ghost sharks, oh my! All sharks are pretty wild...
Fri, 07/21/2017 - 10:57
slideshow
Image Gallery: Swimming with Sharks
For nearly 30 years, National Geographic photojournalist Brian Skerry has been...
Thu, 09/29/2011 - 14:03
slideshow
Spectacular Shark Pictures
Sharks are one of nature’s most beautiful—and misunderstood—creatures. When...
Wed, 06/26/2013 - 12:53