Why abandon well-worn mapping methods in current use? It has to be for one or more forms of gain: time, money or staffpower. UAV-borne lidar can save a lot of field time, eliminate the need for site ...

Thanks to modern laser technology, Southeast Asia’s Khmer Empire is rising from forest floors for the first time in centuries. A helicopter carrying light detection and ranging equipment, lidar for ...

No audio available for this content. Topobathymetric digital elevation model of the confluence of the Potomac and Shenandoah Rivers at Harper’s Ferry, West Virginia. (Image: USGS) The United States ...

From our collaborating partner Living on Earth, public radio’s environmental news magazine, an interview by Jenni Doering with John Hagan, president of Our Climate Common. In the remote northern half ...