climatechange

Lake Mead Comparison

NASA Satellite Photos Reveal the Dramatic Decline of Lake Mead

NASA has revealed dramatic photos that show water levels retreating in Lake Mead which is critical to both the supply of water and electricity across the southwestern United States. The startling images of the largest reservoir in the U.S. demonstrate clearly how much it has shrunk over the past 20 years.

Repeat Photos Show Change in Southern African Landscapes

Every place in the world has a history. To understand it in the present you need some knowledge of its past. The history of the earth can be read from its rocks; the history of life, from the evolutionary histories and relationships of its species.