For K-12 science teachers, National Geographic, in collaboration with wildlife filmmakers Jim and Jamie Dutcher, offers this downloadable guide to teaching about the Gray Wolf in North America. This guide is designed to...

With its bold beak and talented talons, the bald eagle is perhaps one of the best symbols of the United States of America. Recently, the Nature program on PBS created this documentary to profile this majestic animal....

Scientists, students, divers and aquarists can ask questions, post information, look up species profiles, references and links about nudibranchs, bubble-shells, sea hares and other sea slugs worldwide. Messages archived...

How does one distinguish a katydid from a cricket? This website provides an answer to that question, along with samples of calls from other insects, including cicadas. The site was created by Thomas J. Walker and Thomas...

In this issue’s lesson, students exercise their observation skills to do some of the actual work of marine biologists who study the endangered North Atlantic right whale. They identify an individual whale by examining...