The drug consumption rooms of Denmark...

"... where adults with serious addictions can bring their illegal drugs and take them, legally, under the watchful eye of a nurse."

Inside, to the left, behind a huge window, is cluster of smokers with improvised pipes, enveloped in haze. To the right is a long, stainless steel table where several people sit, injecting themselves with heroin, cocaine or both. Some finish and leave quietly. A few slump over the table, asleep. One man gets up and paces frantically back and forth, swearing and shouting. In the middle of it all, sits a nurse in street clothes, calmly taking in the scene.

Every day, these nurses witness up to 800 injections.