Undeterred by formidably sub-zero winter temperatures, Lars and his crab safari team regularly dive off the side of an inflatable Zodiac to a depth of 25 metres in search of crabs.

BBC: The perfect trip: Norway

Natural search is highly affected by the depth of content.

FORBES: Michael Dell's Dorm Room Start-Up Summit

As Google's director of search quality and research (a doozy of a job description), Norvig spurs on 140 scientists and engineers racing to add more depth, speed and relevance to the world's best search engine.

FORBES: The Machinist