Shut-downs are now far less frequent, so that a typical station in America is now online 90% of the time, up from less than 50% in the 1970s.

ECONOMIST: Energy

"We've been through our ups and downs to get this far, " Johnson said.

WSJ: Noah, Johnson hobbled as Bulls, Nets resume series

"It was a lot of ups and downs for me as far as a lot of birdies, a lot of bogeys, fighting to get into it, back out, back in it, " said Mickelson.

BBC: Mickelson keeps his perspective

History is repeating itself so far in 2011, which has been fraught with ups and downs in both international and domestic equity markets.

FORBES: Watch Out: 2011 Looks A Lot Like The Market Top In 2007