Chris ArnoldNPR correspondent Chris Arnold is based in Boston. His reports are heard regularly on NPR's award-winning newsmagazines Morning Edition, All Things Considered and Weekend Edition.
A house under foreclosure that will soon be auctioned in Las Vegas. The Obama administration's foreclosure prevention efforts were blasted this week in a report from a federal auditor.
Mark Ralston/AFP/Getty Images
The SawStop saw can sense a slight electrical current that human fingers (and hot dogs) create. When it senses the current, the saw triggers a safety brake, which stops the blade in less than 5/1,000th of a second.
Courtesy of SawStop