Freak rains have exposed bugs that could indicate there's life on Mars.
Scientists have found microbes that have been lying dormant in the soil for decades. Without water, they have entered into something like an incredibly deep sleep – until rains came and woke them back up.
The bugs had been living in the driest part of South America's Atacama desert. But the same principle could apply on Mars, leading scientists to suggest that similar basic life could be hiding within its surface.
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