Red is widely considered to be the first colour used by early humans, in the form of iron oxide-rich ochres dug from the earth. It is connected with strong emotions and signals danger, an association shared across cultures – around the world, red is the most common colour used for warning and stop signs. Throughout history, artists have used red pigments gleaned from a variety of sources. Modern developments in organic and inorganic chemistry have now seen the red pigment family become one of th

Have you ever seen rain that looks like blood? 🌧️🔴 It’s not a horror movie — this “blood rain” happens when red dust, iron‐rich soil, or spores of red algae mix into raindrops. In Kerala, India and Zamora, Spain, rains stained fountains and streets red. Scientists found microalgae like Haematococcus & spores of Trentepohlia turning red under stress. Not supernatural… just nature going dramatic. #bloodrain #naturefacts #weirdweather #truestory | MindBlow Fact

What is blood rain and where does it come from?