Some people choose to walk alone. Others take part in group explorations led by bird experts.

VOA: special.2009.06.01

The stampeders would have to walk all the way, and transport the supplies by themselves.

VOA: special.2009.02.04

The opening is big enough for perhaps six people to walk through, side-by-side.

VOA: special.2011.07.04

By 1989,at age 33, he'd achieved that goal, becoming the first person to walk to both the North and South Poles.

VOA: standard.2009.12.10

The delays forced NASA officials to shorten the shuttle's mission by one day and eliminate one space walk.

VOA: standard.2009.03.15

Many gathered by Jackson's star on the Walk of Fame on Hollywood Boulevard, and some went to Neverland Ranch, where the singer once entertained close friends and visiting youngsters.

VOA: standard.2009.06.26