[Free Registration/Login may be required to access all resource tools.] Insects, with over a million described species, are the most diverse group of animals on Earth. They may be found in nearly all environments on the planet. No matter...

Survey of unmanned Discovery spacecraft missions such as the Mars Pathfinder rover and other past, present, and planned missions. Illustrated.

The story of the universe is told in this engaging site by the European Space Agency. The history of European space science is timelined with dates ranging from 1066 to present day. The birth of galaxies, the big bang, and the beginnings...

This carbon cycle diagram shows how carbon moves from one part of the Earth to another. Measured in gigatons, the storage and annual exchange involves oceans, vegetation, soil, fossil fuels, the atmosphere and more. For more information...

A single rock breaks up the desolate monotony of a desert landscape. The heat dries up any liquid that emerges from the ground or skies before it has a chance to help create visible life forms. Enjoy learning more about deserts with our...

United Nations Division for Sustainable Development covers issues ranging from Agriculture to Waste. This site offers documents and action plan implementation for sustainable development of the earth's natural resources.

Get the facts about seabirds. This group of birds makes up about three percent of the various species, even though two-thirds of the Earth is covered in water. Learn some unique facts and characteristics of seabirds. Also included in...

A map from 1910 of the Indian subcontinent and the Central Asia region showing the typical rainfall distribution patterns during the summer monsoons, keyed to show areas of rainfall ranging from very light to, according to this text, the...

A map from 1910 of the Indian subcontinent and the Central Asia region showing the typical rainfall distribution patterns during the winter monsoons, keyed to show areas of rainfall ranging from very light to heavy rainfall. The map...