Balloons can maneuver because air moves in different directions at different altitudes. To go a certain direction, you have to raise or lower your balloon until you find a wind that is going your way.

If the desired approach was, in fact, compression, it's important to note that you don't need to compress the entire contents of the balloon. You want to start out with positive buoyancy in the ...

WEBVTT PEOPLE GET ON THEIR FEET AGAIN. >> I CAN WALK AND THERE IS NO PAIN. Reporter: JOHN IS UP AND ABOUT NOW AND THAT IS A MIRACLE FOR A MAN WHO JUST A FEW MONTHS AGO SPENT EVERY DAY IN BED OR THIS ...