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Silhouettes (Public Domain) in front of blood cells (Public Domain) and a gene.

Rh-Negative Blood: An Exotic Bloodline or Random Mutation?

Most people who have the Rh blood type are Rh-positive. There are also instances, however, where people are Rh-Negative. Health problems may occur for the unborn child of a mother with Rh-Negative...
A Racetrack Playa Sailing Stone.

Leave No Stone Unturned: What Propels the Racetrack Playa Moving Rocks?

Racetrack Playa is a dried-up lake located in Death Valley, California, USA. This dry lake is notable for its sailing stones, which are known also as sliding stones, rolling stones, or moving rocks...
Ragnarök battle

Epic Battle Equals Doom or Twilight for Norse Gods? Ragnarök: The Real Message in the Myth

In Norse mythology, Ragnarök encompasses a series of events that will come to pass. It foretells an epic battle which leads to the death of numerous gods, natural disasters, and the death of the...