Tom Robichaud launched his business, Discreet Intervention, six months ago. Here, he works his dog in a vacant office building, hitting on a cylinder containing cocainelike drugs. Pat Greenhouse/Boston Globe via Getty Images hide caption

itoggle caption Pat Greenhouse/Boston Globe via Getty Images

Joaquin "El Chapo" Guzman is escorted to a helicopter in handcuffs by Mexican navy marines at a navy hanger in Mexico City on Saturday. A senior U.S. law enforcement official said that Guzman, the head of Mexico's Sinaloa Cartel, was captured alive overnight in the beach resort town of Mazatlan. Eduardo Verdugo/AP hide caption

itoggle caption Eduardo Verdugo/AP

Inside the drug consumption room in Aarhus, Denmark's second-largest city. Sidsel Overgaard for NPR hide caption

itoggle caption Sidsel Overgaard for NPR

Have a talk about avoiding drug use early and often. And don't overshare. iStockphoto.com hide caption

itoggle caption iStockphoto.com

They flew in from Mexico: Cans of marijuana found in a field near Yuma, Ariz. Customs and Border Protection hide caption

itoggle caption Customs and Border Protection

An undated booking mug made available by the Miami-Dade Police Dept., showing Rudy Eugene. He was shot and killed by Miami-Dade Police after he refused to stop eating another man's face. AP hide caption

itoggle caption AP