Spain's blood-red Río Tinto may hold clues to life on Mars, Nasa says

The Río Tinto in Spain captivates with its vivid red and orange colors, a result of both its ancient geology and extensive mining activities.

In this caustic environment, specialized microorganisms flourish by harnessing energy from iron and sulfur compounds.

Over millennia, mining has intensified these natural chemical reactions, further enhancing the river’s striking look.

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