Going where no man can go, a robot called the Packbot entered the three crippled nuclear reactors at the Fukushima Nuclear Facility in Japan.

The Packbot was also used after 911 to help search for survivors in the rubble and to find potentially hazardous emissions (gas-fumes etc) in New York.  These two Packbots are being used to measure radiation levels inside the three crippled reactors, as well as spotting any new issues that will need repair.  Reactors 1 and 3 were videotaped, but humidity and steam inside Reactor 2 prevented clear pictures.  The robots will allow officials to determine when it is safe for workers to re-enter and repair the facilities.