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A 'blood rain' infiltrates villages of Spain
10 November 2015 9:00
SINC

The rainwater that fell in some of the villages of Zamora (Spain) last autumn brought along a strange traveller: a green microalgae that turns a reddish colour when in a state of stress. Once this microalgae was deposited into fountains and tanks it wasn't long before the water turned red. Researchers from the University of Salamanca have shone light on this 'blood rain' phenomenon, yet they have not yet been able to identify the mysterious origin of these little algae which are also present in the pharmaceutical, food and even automotive industries.