Pigs have no sweat glands, which is why they stay in water or mud to keep cool.

Deliberately infecting people with malaria has been used to cure different viral infections. The high fever will strengthen the immune system and fight the virus. In recent times this has been considered as a treatment to HIV.

After the Krakatoa volcano eruption in 1883 in Indonesia, many people reported that, because of the dust, the sunset appeared green and the moon blue. The moon was said to appear blue for almost two years.

AMAZING FACTS