Unalaskans know the effects of climate change as well as anyone – take this year’s abnormally warm winter, for one. But we’re also witnesses to a different kind of impact: the lucrative business opportunities created by rising temperatures. As ice melts, companies have more access than ever to the multi-billion dollar potential of Arctic oil.

It's part a new book, “Windfall: The Booming Business of Global Warming,” by journalist McKenzie Funk. In this segment of The Exchange, he talks about how the world is reacting to climate change, and how changes in the Arctic could leave a major mark on Unalaska.