How Big Are Everglades Pythons? January 30, 2012 | USGS "This large Burmese python, weighing 162 pounds and more than 15 feet long at the... Artificial Reef in the Florida Keys May 17, 2012 | Washington Post Ten years ago a retired navy ship was converted into an artificial reef in the... Dams on Himalayan Rivers Disrupt Water Supplies April 18, 2011 | MSNBC.com Millions of people depend upon rivers that drain the Himalaya Mountain Range for water supplies,... Teaching About Salt September 8, 2011 | NASA Help students learn about the mysteries of salt with NASA's "Nature of Salt" investigation. ... |