BACKGROUND. Although access to cancer care is known to influence patient outcomes, to the authors' knowledge, little is known regarding geographic access to cancer care, and how it may vary by population characteristics. This study estimated travel time to specialized cancer care settings for the continental U.S. population and calculated per capita oncologist supply.METHODS. The closest travel times were estimated using a network analysis of CONCLUSIONS. There are population groups with limited access to the most specialized cancer care settings.

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[1] During 1960During -2010, the air temperature in the arid region of northwest China had a significant rising trend (P < 0.001), at a rate of 0.343 C/decade, higher than the average of China (0.25 C/decade) and that of the entire globe (0.13 C/decade) for the same period. Based on the analysis of the data from 74 meteorological stations in the region for 1960-2010, we found that among the four seasons the temperature change of winter has been playing the most important role in the yearly change in this region. We also found that the winter temperature in this region has a strong association with the Siberian High (correlation coefficient: R = À0.715) and the greenhouse gas emission (R = 0.51), and between the two the former is stronger. We thus suggest that the weakening of the Siberian High during the 1980s to 1990s on top of the steady increasing of the greenhouse emission is the main reason for the higher rate of the temperature rise in the arid region of the northwest China.Citation: Li, B., Y. Chen, and X. Shi (2012), Why does the temperature rise faster in the arid region of northwest China?,