This image shows concentrations of Methane discovered on Mars. Click to enlarge this image. NASAFrom Discovery News:
Methane in Mars' atmosphere lasts less than a year meaning something -- either geologic or biological -- keeps belching it out.
A six-year study of methane in Mars' atmosphere shows the planet is far from dead, though whether it is merely geologically active or host to microbial life is unknown.
An Italy-based team of researchers combed through billions of measurements taken by NASA's Mars Global Surveyor to compile seasonal maps of the gas, a simple chemical compound that appears in minute quantities in Mars' carbon dioxide-rich atmosphere.
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