'Blood Rain' on Spanish Village Remains a Mystery : Discovery News - 0 views
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Lottie Peppers on 07 Feb 16When the scientists analyzed the water under a microscope, they quickly deduced what was causing the red liquid. In a newly-published study in Spanish Royal Society of Natural History Journal, they reveal that the culprit is Haematococcus pluvialis, a freshwater green microalgae that's capable of synthesizing a red carotene pigment called astaxanthin.