From the difficulty of tracking rare populations to the danger of poachers exploiting distribution data, the complications of studying endangered species require creative solutions from researchers.

Researchers suspect the source of the toxins may be some of the state’s 50,000 or so marijuana farms.

A federal court had ordered the Idaho Fish and Game Department to destroy data collected from a protected wilderness area. 

Emerging infections provide clues about how pathogens might evolve when farm animals are protected from infection.

Tracking the myxoma virus in the wild rabbit populations of Australia has yielded insight into how pathogens and their hosts evolve.

A US Court of Appeals ruled that the Interior Department acted prematurely in removing the animals from the endangered species list.

Researchers in Australia claim to have successfully used immunotherapy to treat devil facial tumor disease.

See images from a century of fur trapping and hunting in the Amazon basin.

Estimating only 7,100 individuals remaining, researchers urge a reclassification of the species from vulnerable to endangered.