Tim Fitzharris / Marsh, Two Medicine Lake, Glacier National Park, Montana

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...

Cyril Ruoso / Woman with baby collecting Madagascar periwinkle (Catharanthus roseus) flowers and leaves, used in herbal medicine, and containing molecules which are used in the treatment of leukemia cancer. Berenty...

Juergen Freund / Spectacled flying fox (Pteropus conspicillatus) casualty of paralytic tick (Ixodes holocyclus) bite being cared for on site of colony by Jenny Mclean, North Queensland, Australia, November 2012

Shibai Xiao / Preserved root of Chinese goldthread (Coptis chinensis) used in traditional Chinese medicine, Henan Province, China, March 2010. No release available.

Jeff Rotman / Irula Snake Tribe member holding vials of snake anti-venom for Viper, Krait and Cobra bites. Southern India.

Petra Wegner / British Shorthair Cat, kitten, golden-ticked-tabby, being administered ophthalmic ointment by a woman. Model released

Pete Oxford / Tiger leg bones and feet with claws together for sale as medicine by Tibetans in a market near Fugong, Yunnan Province, China 2006

Tony Phelps / Extracting venom from Puff adder {Bitis arietans} at Liverpool school of tropical medicine, UK

Neil Aldridge / Tail of an adult Temminck's Ground Pangolin (Smutsia temminckii) showing the scales that make pangolins the world's most illegally trafficked mammal. More pangolins are illegally trafficked than...

Heather Angel / Caterpillar fungus (Ophiocordyceps sinensis), a rare traditional Chinese medicine sold to nourish yin and yang, for anti-aging and as natural viagra substitute- Dong Chong Xia Cho. Yunnan, China.