The dust stopped Syrian regime airstrikes, but left thousands in war-torn Syria and nearby refugee camps at risk.
Midair collisions of sand particles can double the strength of a sandstorm, according to new computer simulations. The work
Considering that Beijing's plans for addressing the record levels of air pollution, 45 times the recommended safety levels, were greeted with little enthusiasm, this blogger would like to offer another one: time to abandon Beijing.
The video comes via National Geographic's recently launched website for "Great Migrations." The feature is a seven-part series
Dust plumes hovered over most of Iraq on July 3, 2009, as the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's