Only during the past 20 years or so has scientific evidence begun to outweigh speculation as a new generation of researchers has tracked the elusive apes across the islands of Borneo and Sumatra ...

Borneo may seem like a world away from Indiana, but the fate of its rainforests has direct consequences for Hoosiers.

This story appears in the March 2019 issue of National Geographic magazine. Late on a sweltering ... humid pit deep below Borneo’s rainforest. Climbing down past an ancient heap of bird guano ...