Crazy publicity stunt or stroke of daring genius? We're not sure, but it got our attention. The man pictured above is Alex Bellini, a professional adventurer and motivational speaker who plans to live alone on a melting iceberg off the coast of Greenland for one year, to emphasize the urgent need for climate change action. This bold one-man campaign comes at a time when a chorus of scientists, organizations and policymakers continue to warn about the accelerating loss of Arctic ice. Thus, extreme circumstances seem to call for extreme measures, but for this former finance student from northern Italy who...