Number of new tuberculosis cases: 9,582 (2013) Number of new salmonella cases: 50,634 (2013) Number of new Lyme disease cases: 36,307 (2013) Number of new meningococcal disease cases: 556 (2013)
Death Valley, California, is the largest national park in the contiguous United States: 3.4 million acres of desert vastness. At first glance it appears to be a barren wasteland, to be hurried through as quickly as possible, but the alert visitor soon recognizes that there is much here to see and experience.
The depth and shape of Death Valley influence its summer temperatures. The valley is a long, narrow basin 282 feet (86 m) below sea level, yet is walled by high, steep mountain ranges. The clear, dry air and sparse plant cover allow sunlight to heat the desert surface.eath Valley has a subtropical, hot desert climate (Koeppen: BWh), bwh with, long extremely hot summers and, short warm winters as well as little. Rainfall as a general, rule lower altitudes tend to have higher. temperatures