“It is treacherous, it’s beautiful, it’s powerful, and I think the only way to feel more humbled by nature would be if you were in outer space looking back,” says Indagare founder Melissa Biggs Bradley of her journey to Antarctica, the mythic, icy frontier that captivated the minds of sea captains, explorers and theologians even before they could prove its existence. In the last century, the continent has become an object of study for scientists and climate change warriors—and it certainly has n...