Bøger af Phillip W. Simpson

You may have heard of Thomas Edison or Alexander Graham Bell. But have you ever heard of Hedy Lamarr or Bi Sheng? Without Hedy Lamarr, we wouldn't have wireless technology. Without Bi Sheng, we wouldn't have printed books! Learn about eight important inventors and how their inventions have shaped the world we live in today.

The tundra habitat includes both the flat regions of the Arctic and the alpine heights of mountains. This habitat acts as a source of food and a climate suitable for the plants and animals that live there. Learn about the geography and resources of tundra habitats as well as how animals and people have adapted to and changed tundra environments.