Martian Life Must be Rare as Free Energy Source Remains Untapped

New Scientist: 05/04/2017, Bob Holmes

Does anything call Mars home? Image: JPL/NASA

If life still exists on the Red Planet, it must be very rare – or so an unexploited energy source in the atmosphere suggests. The Martian atmosphere is unusually rich in carbon monoxide, which many microbes here on Earth can convert to carbon dioxide to yield energy for growth. Read more...