Image of the Day Land
The confluence of the Rio Negro and Rio Solimões in Brazil is famous for unusual mixing patterns.
Image of the Day Water Human Presence
Floods
Acquired on February 21, 2011, and February 23, 2010, these false-color images show water levels along the Indus River before and after the monsoon floods that struck Pakistan in 2010.
Land Floods
Image of the Day Land Life Floods
A new study found that the abundance of these floating plants has increased due to urbanization.
Image of the Day Life Water
Natural vegetation and irrigated farmland along the Snake River Plain in Idaho use dramatically different amounts of water during the growing season.
Image of the Day Atmosphere Land Life Human Presence
Acquired June 27, 2011, and May 28, 2011, these false-color images compare conditions along the Yangtze River before and after torrential rains.
Although improved over the previous several weeks, flood conditions lingered around Ayutthaya and Bangkok in early December 2011.
The fast-growing city has polluted waterways and a growing demand for clean tap water.