Collapse Format:DVD Chris Petersen and Pat Petersen

Chris Petersen and Pat Petersen

so what drives them to do it

gazillionaire Walden Schmidt

from the monster known as "Bloody Bobby

Driven by a twenty-year quest to finish their mixtape trilogy

Collapse Format:DVD Chris Petersen and Pat PetersenThe idea that a building's walls will stand up seems as safe a bet as gravity's pull or the sun's rising. Most of us don't worry much about whether our apartments, offices, supermarkets, or schools are going to collapse on us as we go about our daily routines. But should we? National Geographic takes a look at buildings around the world that despite having appeared structurally sound, some for years on end, came crashing down in a moment's notice. Dig