Researchers Believe Mars Could Support Greenhouses The Miami Herald

Evidence of ancient water beds on Mars has scientists dreaming up ways to turn the Red Planet into a green paradise. In small steps, anyway. Some researchers think Mars might harbor liquid water deep under its surface, which could be used to nourish plants in self-contained greenhouses. With acres of these futuristic farms, astronauts could grow fruits and vegetables — and have a source of oxygen — allowing human colonies to live on the planet indefinitely.