WINDHOEK, Jan. 15 (Xinhua) -- Namibia has called for an end to illegal sand and gravel mining, warning that unregulated extraction is causing serious environmental damage and posing risks to human ...

URUMQI, Jan. 19 (Xinhua) -- Despite the winter chill, Moyu County in northwest China's Xinjiang Uygur Autonomous Region is still bustling with sand-control efforts. Bulldozers roar across the ...