This website is the digital version of the 2014 National Climate Assessment, produced in collaboration with the U.S. Global Change Research Program. For the official version, please refer to the PDF in the downloads section.
Lahars move rapidly down valleys like rivers of concrete. If you are on the floor of a valley that leads from a volcano and become aware of an oncoming lahar, seek high ground. Lahar is an Indonesian term that describes a hot or cold mixture of water and rock fragments that flows down the slopes of a volcano and typically enters a river valley.
the DARPA âcheetahâ is the worldâs fastest running robot, capable of moving at speeds up to 18mph engineers of DARPA (the US defense advanced research projects agency) have set a new land speed record for a legged robot with the âcheetahâ, capable of galloping at speeds of up to 18mph.