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 cheetah is the worldâs fastest land animal. They can run 70 mph (or 110 kph), which is as fast as cars drive on the highway. The cheetah can reach its top speed in just 3 seconds!he cheetah has a long, muscular tail that has a flat shape. The tail almost functions like a rudder on a boat because they use it to help control their steering and keep their balance when running very fast.