NASA scientists have said that dust storms on Mars may contain and transport toxins that would poison any life form from Earth that may land on the Red Planet's surface. The toxic chemicals in question are hydrogen peroxide and other corrosives.
One of the study's lead authors, Gregory Delory, said: "We are trying to look at the features that make a planet habitable or uninhabitable, whether for life that developed there or life that we bring there."
The toxic chemicals form when Mars's small dust devils and storms across the planet combine with static electricity. A second study said that the peroxide could be high enough to form a toxic snow that would then blanket the Martian surface.