A&E Television
History.com: How Early Humans Survived the Ice Age
The most recent ice age peaked between 24,000 and 21,000 years ago, when vast ice sheets covered North America and northern Europe, and mountain ranges like Africa's Mt. Kilimanjaro and South America's Andes were encased in glaciers. At...
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Changing the Freezing Point of Water With Salt
This lesson plan teaches first grade students basic chemistry and physics principles--that saltwater freezes at a lower temperature that plain water.
Woods Hole Oceanographic Institution
Polar Discovery: Compare the Poles
A detailed comparison of many aspects of the two polar regions. Includes physical features, seasons, weather, types of ice, plants and animals, human population, and climate change.