killings-凯发k8官网

15-08-18 gang slayings move in a systematic pattern over time, spreading from one vulnerable area to the next like a disease, finds a groundbreaking study by michigan state university criminologists and public health researchers. their findings, published on...

15-07-06 mass killings and school shootings in the u.s. appear to be contagious, according to a team of scientists from arizona state university and northeastern illinois university. study author sherry towers, research professor in the asu simon a. levin ma...