This website provides information on the life and inventions of Lee DeForest, the man who invented the audion tube, which made commercial radio broadcasting practical.

Illustrated resource explores rainforests including its layers, the different types, importance, and deforestation.

Geography and culture of the western Amazon state of Rondonia, including detailed information about urbanization and deforestation and links to other resources about Rondonia.

Part of a larger site about the history of the transistor, this brief biography of Lee de Forest, the inventor of the audion, includes a QuickTime movie that shows how it worked.

Guardian correspondent Rory Carroll discusses the struggles of the indigenous tribes of the Amazon against Peruvian security forces. (July 4, 2009)

Plants are one of the two major Kingdoms of living creatures on the Earth. They are the only beings which produce their own food. Additionally, plants are necessary for animals to live. Plant anatomy, life cycle, reproduction and the...

A biography on audion inventor, Lee de Forest, from childhood on. Hyperlinks to additional information about the radio and broadcasting.

NatureWorks offers some fascinating information about the Temperate Deciduous Forests. Students and teachers will learn what makes these forests special, what animals live in this biome, what plants grow in this biome, and more.

Provides links to sites such as forestry, population, management, diversity, and fire. There are lesson plans, tours and educational links for teachers.

Learn about landslides, their causes, the different types, how to prevent them, names of major landslides, and other interesting facts.

Students can find out what can to do to help preserve our forests.