Jeff Rotman / Man and woman with Cannabis plant in organic Marijuana farm, Pueblo, Colorado, USA, June 2015. . Marijuana has legalized in the state of Colorado, and this farm produces Marijuana for medical and reta...

Jeff Rotman / Person holding large Cannabis bud, in organic Marijuana farm, Pueblo, Colorado, USA, June 2015. . Marijuana has legalized in the state of Colorado, and this farm produces Marijuana for medical and ret...

Michael Pitts,Michael Pitts / DC-3 Aircraft wreck. Drug running aircraft that crashed in shallow water. Normans Cay, Exhumas, Bahamas. May 2005

John Waters / John Downer Prod / Black lemur uses millipede secretions to ward off mosquitos and as a happy drug (Resolution restriction - image digitised from film, 'Weird Nature' tv series)

John Downer Productions / Jaguar chews on yaje leaf, known to have hallucinogenic properties (Resolution restriction - image digitised from film, 'Weird Nature' tv series)

Nigel Cattlin / Drugstore beetle (Stegobium paniceum) feeding, a pest of dried plant products and grain debris.

Jaymi Heimbuch / Santa Catalina Island Fox (Urocyon littoralis catalinae) biologist, Julie King, vaccinating fox against canine distemper virus, Santa Catalina Island, Channel Islands, California

David Woodfall / Man with a tiny frog in his hand, from the Phoenix Project, a Glasgow-based rewilding project which helps young alcoholic and drug addicts at Glenlude Farm, managed by the John Muir Trust, Scotland. A...

Jabruson Motion / Close-up of a vet preparing drug for darting a Sumatran orangutan (Pongo abelii), part of a relocation programme, Sei Serdang, Prima, Batang Serangan, Langkat, North Sumatra, Indonesia, 2015.

Alex Hyde / Coca (Erythroxylum coca) leaves drying in the sun. Amazonia, Peru. November.

Alex Hyde / Coca (Erythroxylum coca) leaves drying in the sun. Amazonia, Peru. November.