A WOMAN COVERS HER HEAD WITH A SCARF TO PROTECT HERSELF IN A SAND STORM IN BEIJING

A woman covers her head with a scarf to protect herself from a major sand storm which turned the sky amber and greatly reduced visibility in front of Beijing's Tiananmen Gate March 20, 2002. Extensive deforestation and desertification in northern China have fueled the dust stoms. Nearly one million tonnes of Gobi Desert sand blows into Beijing each year. REUTERS/Guang Niu