Airborne Laser Scans Just Uncovered a City Lost for a Millenium

Forget trowels and tiny little brushes. The new must-have tool for archaeology is lasers. Just last month, researchers in the Honduran rainforest used them to find a lost city of gold, and now archaeologists in Cambodia have found a forgotten city that's even older. Welcome to Mahendraparvata, a metropolis unknown… »6/15/13 1:30pm6/15/13 1:30pm