A Canadian-Iranian dual national — arrested by Iranian authorities for his environmental work and contact with foreigners — died during interrogation.
Melania Trump's Africa trip took the first lady from a hospital to schoolrooms and ancient landmarks as she drew attention to the needs of children.
During her visit to Kenya, first lady Melania Trump visited a home for children separated from their mothers and fed a baby elephant at a rescue facility.
Saving species helps preserve vibrant ecosystems we humans depend on every day. Test your knowledge of some animals at risk of extinction.
In the Russian Far East, an endangered Amur tiger was released back into the wild in 2017, giving conservationists hope for the species’ future. The news comes just in time for World Wildlife Day on March 3.
Check out some of the amazing nature photos submitted by photographers for National Geographic's 2017 Nature Photographer of the Year contest.
On October 23, International Snow Leopard Day we celebrate the endangered mountain feline, whose health reflects the health of important ecosystems.
Endangered animals may get some protection thanks to new apps developed at the second annual Zoohackathon, co-sponsored by the U.S. Department of State.
American Prairie Reserve, a public-private partnership, is bringing back buffalo, birds and big, open sky to the Montana prairie.