All Things Considered on KRVS

Most people have their route to work memorized; they can do it with their eyes closed. Heading into the office is some combination of elevators — stairs if you're more ambitious — and hallways. Easy.

Tom Keller's route is a bit more complicated.

"Step here, and there's a bad railing right here with a step," Keller cautions, threading his way up along a series of dimly lit, narrow catwalks suspended above the football field inside the New Orleans Superdome.

The stadium is home to the New Orleans Saints and will host this year's Super Bowl.

All this week, we've been examining the world's last remaining pockets of polio, a disease for which there is no cure. India marked a milestone when the World Health Organization struck it from the list of polio-endemic countries in February after no new cases were reported for more than a year. From Delhi, NPR's Julie McCarthy reports on how, despite poverty and poor sanitation, the world's second-most populous country is eradicating the disease.