Extreme Science
Extreme Science: Atacama Desert
Does anything live in the driest place on earth? Evidently there is a town there! Here's a great resource on the Atacama desert in Chile that explains the reasons for this condition.
Carnegie Museum of Natural History
Carnegie Museum of Natural History: Needle to the North
Online exhibit explores Arctic expeditions of the twentieth-century via the photos and field notes of researchers who experienced the "alien landscape rife with cold, darkness, and isolation."
National Geographic
National Geographic: Geostories: Earth's Extremes
Follow this GeoStory to learn about Earth's extremes, from highest and lowest, to hottest and coldest.