Geysers are a rare natural phenomena found only in a few places, such as New Zealand, Iceland, the United States (Yellowstone National Park), and on Russia’s far eastern Kamchatka Peninsula. On June 3, 2007, one of these rare geyser fields was severely damaged when a landslide rolled through Russia’s Valley of the Geysers. The landslide—a mix of mud, melting snow, trees, and boulders—tore a scar on the land and buried a number of geysers, thermal pools, and waterfalls in the valley. It also blocked the Geyser River, causing a new thermal lake to pool upstream.
In the arid stretches of southern Algeria lies the Ouargla Oasis. The imagery shows both urbanization near the oasis, and an assortment of irrigated fields in the region.
Acquired October 3, 2011, and September 19, 2011, these false-color images compare conditions in northern Algeria, which experienced severe flooding in early October.
Using satellite data, scientists predicted an outbreak of Rift Valley fever in East Africa months before the first human cases were reported. The early prediction gave governments time to mitigate the spread of the disease.