When do we get to meet the Martians? Scientists studying a meteorite that fell to Earth from Mars have found more evidence to support theories that water and microbial life existed at one time on the Red Planet. The researchers believe tiny "micro-tunnels" and carbon deposits found on it could be evidence of a process involving water and microbes. The rock is determined to be 1.3 billion years old and landed in Antarctica 50,000 years ago.
