News tagged with great wall

Space the latest frontier for Earth Hour

Millions of people are expected to switch off their lights for Earth Hour Saturday in a global effort to raise awareness about climate change that will even be monitored from space.

Space & Earth / Environment

Mar 31, 2012 | 5 / 5 (3) | 6

China's Great Wall far longer than thought: survey

The most comprehensive and technologically advanced survey of China's Great Wall has discovered the ancient monument is much longer than previously estimated, state media reported Monday.

Other Sciences / Archaeology & Fossils

Apr 20, 2009 | 3.9 / 5 (9) | 0