environment that we have. reporter: at the toy store s headquarters in st. louis, employees can opt for a compressed workweek. but other benefits make working more bearable. a concierge takes care of dry cleaning and on-site oil charges. build-a-bear workshop is 80th on fortune magazine s list of the best 100 companies to work for. we saw, of course, people being pulled out of the rubble of haiti s earthquake days, even weeks after the day the quake happened. why did they survive when so many others did not? reporter: we see story after impossible story of survivors beating the odds. this 5-year-old boy was pulled out after 8 days. he was severely dehydrated. this clerk at a hotel store was found after 11 days. he survived on food and drinks left in the store s wreckage.
reporter: we have seen story after impossible story of survivors beating the odds. this 5-year-old boy was pulled out after eight days and was severely dehydrated. this clerk at a hotel store was found after 11 days. he survived on food and drinks left in the store s wreckage, and that s according to his brother. this man said he was intombed in the rubble with a fractured hip. he survived from rationing water from a 2-gallon jug. and then there is the seemingly impossible image of this girl, rescued after 15 days. rescue workers think she had access to the water in the bathroom where she was trapped. what really dictates somebody s ability to survive? the first requirement would be