Weird red rain in India - are we aliens? We Are The Aliens - BBC Space

In July 2001, southern India was hit by weird red rain floods. What could cause it? Or who? Watch this fascinating clip from BBC Horizon science show 'We Are the Aliens' to find out more.

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Was the red rain in India evidence of alien microbes from deep space? Does that explain how life started on Earth? Are we all aliens? Or was the red rain just unusual red algae from the Indian waters? You make your own decisions with this video from BBC Horizon show 'We are the aliens'.