[ti:You Might Be Surprised about the Riskiest Places to Live in the US] [by:www.21voa.com] [00:00.00]更多听力请访问21VOA.COM [00:00.04]The Federal Emergency Management Agency, known as FEMA, [00:04.72]is responsible for preparing the United States for natural disasters. [00:11.36]One way the agency works to be prepared [00:14.80]is by trying to predict where disasters might happen in the future. [00:21.60]The information FEMA gathers is calculated [00:25.04]and put into a tool called the National Risk Index. [00:31.12]The index takes a look at natural disasters such as earthquakes, [00:36.60]floods, forest fires, tornadoes and more. [00:43.00]It also takes population and building density into consideration. [00:49.92]Out of over 3,000 counties in the U.S., [00:54.20]Los Angeles County in southern California [00:57.64]is the riskiest place to live. [01:00.96]That is home to the city of Los Angeles. [01:05.88]The counties in the U.S. that are home to other large U.S. cities are risky, too. [01:13.32]New York County, home to New York City, [01:16.48]and Miami-Dade County in Florida have large populations, [01:21.84]lots of buildings and homes and are close to water. [01:27.20]Cities that are close to water are generally considered risky due to flooding. [01:34.36]Other U.S. cities that have a high risk index are Philadelphia, Pennsylvania; [01:40.56]San Antonio, Texas; and St. Louis, Missouri. [01:46.40]There are some places in the U.S. that are at high risk for natural disasters, [01:51.76]but they do not rank as high on this list. [01:56.44]For example, Oklahoma County, in the state of Oklahoma, [02:01.16]has seen over 120 tornadoes since 1950. [02:07.32]However, FEMA says it is not as risky for tornadoes [02:12.08]as some of the counties close to New York City. [02:16.44]That is because if a tornado were to hit near New York, [02:20.56]it would cause more damage and affect more people [02:24.64]than when they hit in Oklahoma. [02:28.28]Susan Cutter is the director of the Hazards [02:31.32]and Vulnerability Research Institute [02:34.16]at the University of South Carolina. [02:38.12]She worked on gathering some of the data used in the FEMA study. [02:44.24]She explained why densely populated counties are at risk. [02:50.04]"A small tornado can create a large dollar loss," she said. [02:56.04]Mike Grimm works for FEMA. [02:59.00]He said one reason densely populated cities rank high on this list [03:05.24]is because many of the residents would not [03:07.96]be prepared for a disaster if it happened. [03:12.40]They do not think their cities are at risk. [03:17.00]"Just because I haven't seen it in my lifetime [03:20.24]doesn't mean it won't happen," Grimm said. [03:24.92]The list has its critics. [03:27.92]David Ropeik wrote a book called "How Risky Is It, Really?" [03:34.56]Ropeik said he did not think the FEMA study [03:37.56]calculated the risk brought on by climate change well enough. [03:42.64]He said people do not think things that happen infrequently are risky. [03:49.56]But when they happen, they can cause a lot of damage. [03:54.96]He mentioned Superstorm Sandy, [03:57.80]which flooded much of New York City in late October 2012. [04:04.32]Himanshu Grover researches land use and planning [04:08.64]at the University of Washington. [04:12.12]He studies how communities develop [04:14.76]and how they manage climate change. [04:18.84]Grover said the FEMA tool was "a good start," [04:22.56]but he did not think it paid enough attention [04:25.84]to the frequency of a region's storms and disasters. [04:31.56]FEMA's Mike Grimm said the tool should help "homeowners [04:35.92]and renters and communities to be more resilient." [04:41.24]I'm Jonathan Evans. [04:43.08]更多听力请访问21VOA.COM