National Geographic has a fantastic Web site, with lots of great articles on everything under the sun. Find out about environmental issues, or explore the latest exotic travel destinations in the Adventure section.
Check out animated interactive features on everything from King Tut's tomb to Mount Everest, or participate in interactive chat forums. The site also offers fantastic photography, and a great map section.
So whether you're researching a school project, or just looking for something interesting to read, stop in at National Geographic's Web site.