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.
1 They may be big and heavy, but tigers are by no means slow movers. In fact, at full speed they can reach up to 65km/h! 2  These fierce felines have walked the earth for a long time. Fossil remains of tigers found in parts of China are believed to be 2 million years old.