Why do some areas of the Earth appear 'blood rain'?

According to many records of historians, the phenomenon of blood rain has been mentioned for a long time, for example in ancient Greece with the descriptions of the poet Homer in the famous Iliad. Accordingly, the supreme god Zeus on the Olympic summit created a rain of crimson blood to warn of an impending great battle on earth.

In addition, a number of other documents found before BC also mention the presence of this phenomenon. By the Middle Ages, people continued to witness red rains from all over the world. However, the belief that blood rain brings bad luck to humanity was found in the majority of people in Northern and Western Europe. The two-year period 1348 – 1349 was a dark period in Germany when the 'Black Death' raged across all parts of the country, and what made people more special was the appearance of a rain of blood. lasts more than 2 days.

Today, at a time when science and technology have developed greatly, the "blood rain" is still constantly appearing, prompting scientists to find solutions.

If in literature, authors used this phenomenon to foretell bad events that are about to happen like death and destruction, today, many researchers have spoken up to explain.

Blood-red rains once appeared around the Sahara desert - one of the largest deserts in the world located in Africa.

According to the researchers' explanation, the sand and brown dust carried by the storms, mixed with water droplets in the clouds, gave the rain a reddish-brown color.

Blood-red rain in Kerala, India.

Meanwhile, in Kerala (India), spores of red algae called Trentepohlia Annulata were swept away by the wind, mixed with raindrops, causing blood rain.

In the Zamora area (Spain), a type of algae Haematococcus Pluvialis entangled in the clouds causing rain. They produce a red pigment called astaxanthin, which causes blood rain.

The "blood rain" is also considered as the "warning" of the earth to humans.

The cases of blood rain usually occur in small areas, the time can be different, sometimes lasting for a short time. Besides, the red color of rainwater can also be a consequence of air pollution.

In fact, rain on Earth is not only red, but can also take on more colors like yellow, black, and milky white. The most common explanations for unusual rain colors include the presence of algae spores in the air; Dust and some pollutant chemicals are dissolved in water. For example, pollen produces yellow rain, coal mine dust causes black rain.

Although it has been confirmed by many scientists that it does not contain supernatural or mysterious powers, the phenomenon of "blood rain" is still a powerful warning about the interlacing wounds on the earth. And the "bad omen" if any, will be the price that people have to pay for the actions that have destroyed nature over the years.