New research has found the first evidence that large rivers control desert sands and dust. But how exactly? First we need to know a little bit about loess.
Loess is a silt-sized sediment which is formed by the accumulation of wind-blown dust. Loess deposits may be very thick and often blankets
An ambitious plan to expand the western Chinese city of Lanzhou into a regional industrial hub is raising concerns over what critics call lax government oversight of the environmental and safety impacts, including worries that it will siphon huge amounts of water from an already parched region and devastate nearby mountains.