A ferry crosses the Delaware Bay from the town of Lewes Delaware to Cape May and back several times every day.

VOA: special.2009.06.01

When the water heater is working correctly, water will flow from the storage tank to the collector and back again.

VOA: special.2009.04.20

Borman and Lovell proved that humans could survive in space for the time needed to get to the moon and back.

VOA: special.2009.07.01

Passengers will pay two hundred thousand dollars to ride to outer space and back for two and a half hours.

VOA: special.2009.12.18

They stretch from the north pole to the south pole, and back again in great circles of the same size.

VOA: special.2010.07.14

She made speeches about flying. And she continued to fly by herself across the United States and back.

VOA: special.2010.05.26

They needed to change their flight path to take them around the moon and back toward Earth.

VOA: special.2009.07.22

You can track a shark that swims from Australia all the way to southern Africa and back.

VOA: special.2009.03.25

I always have been since Magic Johnson and Kareem Abdul-Jabbar and back in the good old days.

VOA: special.2010.06.25

They had proved that people could live and work in space for the time it would take to get to the moon and back.

VOA: special.2009.06.24

From France she went to Italy and Egypt, through South Asia to Singapore and Japan, then to San Francisco and back to New York.

VOA: special.2010.10.10

But since then, the twenty-five year old had experienced severe hip and back problems.

VOA: special.2010.02.26

The other three parts move forward and back through time and space.

VOA: special.2010.01.10

Some visitors ride mules to the bottom and back.

VOA: special.2009.10.07