1. Tourism in Extreme Environments The Example of Las Vegas

3. Southern Nevada

4. http://www.weathero nline.co.uk/ McCarran Intl. Airport (664m) in Las Vegas

5. Growth of the city 1972-2010 https://www.youtube.com/watch?v=fdxHA ggOmB4https://www.youtube.com/watch?v=fdxHA ggOmB4

6. http://www.lasvegas.com/listing/a-day-at-valley-of- fire/6019/tour/591/

7. Challenges

8. Water supply LAKE MEAD, Nev. — The sinuous Colorado River and its slew of man- made reservoirs from the Rockies to southern Arizona are being sapped by 14 years of drought nearly unrivaled in 1,250 years. (NY Times, January 6, 2014, “Colorado River Drought Forces a Painful Reckoning for States”) Hoover Dam (1935) Lake Mead

9. Flash Flood A flood caused by heavy or excessive rainfall in a short period of time, generally less than 6 hours. Flash floods are usually characterized by raging torrents after heavy rains that rip through river beds, urban streets, or mountain canyons sweeping everything before them. They can occur within minutes or a few hours of excessive rainfall. They can also occur even if no rain has fallen, for instance after a levee or dam has failed, or after a sudden release of water by a debris or ice jam. http://www.youtube.com/watch?v=lfln50LhUbw http://www.srh.noaa.gov/mrx/hydro/flooddef.phphttp://www.srh.noaa.gov/mrx/hydro/flooddef.php (National Weather Service Weather Forecast Office)

10. Electricity https://www.youtube.com/watch?v=PNSD WXFbsl0https://www.youtube.com/watch?v=PNSD WXFbsl0