Only their special space clothing would provide the air pressure they needed to stay alive.

VOA: special.2009.06.24

The air pressure in a plane during flight is lower than at sea level.

VOA: special.2009.07.14

The astronauts had removed all air pressure from the spacecraft.

VOA: special.2009.06.24

NOAA scientists say Katrina's air pressure was very low.

VOA: special.2010.08.24

The second is the low barometric air pressure.

VOA: special.2010.06.30

All this wet air is pulled in by a high pressure area over the Indian Ocean and a low pressure area to the south.

VOA: special.2010.05.25

Bigger livestock herds are putting greater pressure on land resources and disrupting some ecosystems and the animals generate significant amounts of water and air pollution, including methane, a climate-changing greenhouse gas.

VOA: standard.2010.02.22