Graphic explains the two methods of formation of a deadly volcanic pyroclastic flow, a high-speed avalanche of hot ash, rock fragments and gas. MCT 2010

03000000; 06000000; 13000000; DIS; ENV; krtcampus campus; krtdisaster disaster; krtenvironment environment; krtscience science; krtscitech; krtworld world; SCI; TEC; krt; mctgraphic; 03011000; krtvolcano volcano; volcanic eruption; 06005001; air pollution; environmental issue; environmental pollution; 13004001; geology; natural science; krtdiversity diversity; youth; ash; lava; magma; molten; mountain; pyroclastic flow; krt mct; 2010; krt2010

FILE – This Nov. 18, 2009 file photo shows credit and bank cards with electronic chips in Gelsenkirchen, Germany. In the wake of recent high-profile data breaches, including this weeks revelation that hackers stole consumer data from eBays computer systems, Visa and MasterCard are renewing a push to speed the adoption of microchips into U.S. credit and debit cards. (AP Photo/Martin Meissner, File) cmoore@abqjournal.com Thu Aug 20 15:43:04 -0600 2015 1440106983 FILENAME: 197660.jpg

Nickelodeon’s hit series Avatar: The Last Airbender invades television screens with a new one-hour TV movie “Day of Black Sun” on Friday, Nov. 30 from 8 to 9 p.m. (ET/PT). The epic third season of the series from creators Mike DiMartino and Bryan Konietzko continues as Aang and his rag-tag crew launch their massive attack on the Fire Nation during the solar eclipse. This special television event features the guest voices of Avatar fan and tennis pro Serena Williams as Ming (Uncle Iroh’s guard) and WWE wrestler Mick Foley as The Boulder. (PRNewsFoto/Nickelodeon) (Newscom TagID: prnphotos066953) [Photo via Newscom]

Smoke trail in different colors