Cronkite News reports that border crosser deaths are up this year from 2012:
As of Sept. 11, 146 bodies had been found, up from 125 through that date in 2012, Dr. Gregory Hess said.
His office reported 29 deaths in June and 36 in July, though he said deaths decreased during cooler weather in August.
"The summertime is the busiest for us in terms of undocumented border crosser deaths in the desert," he said.
Hess said he can't pinpoint the reasons for this year's increase, but he noted that June was particularly hot. He noted that in many cases his office can't prove that dehydration or heat was the cause of death, though they may be suspected.
"It's the absence of a logical explanation and a story that essentially fits with that environmental exposure," he said.
Since 2000, the most deaths of border crossers in a calendar year in Pima County was 225 in 2010.
Hess said that aside from the weather, a person's physical condition prior to crossing the border contributes to what he or she is able to endure.
According to the National Foundation for American Policy, even though the number of those crossing the border illegally has diminished the number of deaths along the U.S.-Mexico border increased by 27 percent in fiscal 2012.
Tighter enforcement in other sectors has pushed many border crossers to the rugged desert near Tucson, driving up deaths in Pima County in recent years.
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