He describes himself in an autobiography as a hot-and-cold student in high school, doing well when he studied but suffering plummeting grades after he skipped class to smoke and drink with friends.

CNN: Getting to know Roh

When the Cold War ended the service had well over 500 vessels in the active fleet, but that number dwindled to less than 400 during the 1990s and less than 300 in the decade just ended.

FORBES: Low-Cost Warship Rescues Navy From Shrinking Fleet

The seawater down there is so cold that when natural gas bubbles out of the well into the water it forms methane hydrates, which clog the uptake pipe.

FORBES: BP's Big Box Removed From Leak As Gas Crystals Clog Uptake Pipe

Mraz shared tales of his avocado farm, as well as what it's like to get the cold shoulder from Simon Cowell, when he sat down with CNN recently.

CNN: Million-selling artist intimidated by 'Idol'

For what causes the cold snaps is when an area of high pressure sits over the continent and, well, just sits there.

FORBES: Why Wind Power Doesn't Work