One of the most shared metaphors about life on Earth is the cosmic clock. It is often said that if the history of our planet were represented by a 24-hour clock, life would appear around 4:00 or 5 ...

At the depths of Tlayócoc Cave in the Sierra de Guerrero, Mexico, a hidden chamber, untouched for centuries, has been found shedding new light on the enigmatic Tlacotepehua civilization ...

The Tlacotepehuas, a civilization once located in the Sierra de Guerrero, have long been a mystery, with very little information about their culture and practices. Cosmic symbols found on ...