In Test Chambers, Engineers Show How Liquid Water Forms on Mars

In chambers that mimic Mars' conditions, University of Michigan engineers have shown how small amounts of liquid water could form on the planet despite its below-freezing temperatures. The researchers found that a type of salt present in Martian soil can readily melt ice it touches - just like salts do on Earth's slippery winter walkways and roads. The findings support the theory that strange globules seen on the Mars Phoenix lander's leg were liquid water.