The protective salt marshes that ring Lake Natron in Tanzania have nurtured the highest concentrations of lesser and greater flamingos in East Africa.
The Mississippi watershed is the largest drainage basin in North America with an area of 3.2 million square kilometers (1,245,000 square miles). The extent of the watershed reaches 32 U.S. states and two Canadian provinces. The area of the watershed covers 40% of the landmass of the continental United States. The The Mississippi […]
Water is essential for life on the planet, and tool from the U.S. Geological Survey (USGS) makes it easy and fun to trace water flow across the United States from your own computer. The device is called Streamer, and with only a few clicks, users can follow major water ways from […]