Ron wrote:
http://science.nasa.gov/headlines/y2...reenhouses.htm

Greenhouses for Mars
NASA Science News
February 25, 2004

hen humans go to the moon or Mars, they'll probably take plants with them.
NASA-supported researchers are learning how greenhouses work on other
planets.

February 25, 2004: Confused? Then you're just like plants in a greenhouse on
Mars.

No greenhouses exist there yet, of course. But long-term explorers, on Mars,
or the moon, will need to grow plants:

WEREN'T THE AIRBAGS SEMI-GREENHOUSES? Isn't that why they had mud under
them and a puddle shortly after they were retracted?

JS