Scattered across 240 sq km on the remote Niyamgiri hill range in the eastern Indian state of Odisha, an ancient tribal group known as the Dongria Kondh have earned themselves a reputation as trailblazers.
Aleta Baun, an Indonesian environmental activist known in her community as Mama Aleta, has a penchant for wearing a colourful scarf on her head, but not for cosmetic reasons.