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A Dangerous Crossing

John Moore/Getty Images

Death investigator Trevis Hairston moves a corpse in the morgue of the Pima County Medical Examiner on September 29, 2016 in Tucson, Arizona. Hundreds of undocumented immigrants die every year, most from dehydration, in the desert while crossing illegally from Mexico into the U.S. Forensic anthropologists study personal effects and bodily remains in an effort to identify the bodies and reunite them with loved ones.

2016 in numbers