Red rain in Kerala
In 2001, the southern Indian state of Kerala was left in amazement. It was pouring red rain, and it stained everyone’s clothes pink. At first, some kind of meteor strike was blamed.
However, later studies confirmed that the cause for the color red was airborne spores from locally prolific terrestrial green algae from the genus Trentepohlia. The phenomenon later reoccurred in 2012 in India and Sri Lanka.