While we have tapped into sources of power for travel, industry and our modern lifestyles, we are still largely at the mercy of the powers of nature. Technology and infrastructure can undergo total collapse in the face of storms, volcanoes, and earthquakes. Meanwhile political and social power can either tackle such challenges or become ways to exploit and tyrannize. This multi-faceted subject is portrayed with thought and artistry by the twelve exceptional artists shortlisted for this prestigious photography prize.