Sarah MacNair-Landry, the explorer who grew up surrounded by dogs and snow
The 33-year-old Canadian, the daughter of two polar guides, is the youngest person to explore the two poles and documents climate change on her trips
Angela Maldonado, guardian of the Amazon
The Colombian ecologist is dealing with a myriad of threats to what is considered the lungs of the world
Madelaine Böhme, the paleontologist who challenged long-held tenets about the cradle of humanity
The German scientist’s research on the European hominid sparked controversy by theorizing that the human race may not have originated in Africa