Ancient Earth was a much more hostile place than it is today. About 42,000 years ago, Earth saw its magnetic poles fluctuate. Scientists have known that the Earth’s magnetic poles have flipped since the late 1960s. Magnetic poles are not fixed. The poles are created by electrical currents from the planet’s liquid outer core, which is constantly moving.
The recent coup was not believed to have had a significant environmental impact. The magnetic field became weaker and allowed more cosmic rays to reach the planet’s surface. Despite its exposure to more cosmic rays, plant and animal life is not believed to have been significantly affected. However, prof New study He found that the additional cosmic increase may have depleted ozone concentrations and allowed more UV rays through the atmosphere.
Researchers believe it contributed to changing weather patterns that may have expanded ice cover over North America during the drying up of Australia. This may have led to the extinction of several large species on the planet. The study authors also believe that a solar storm may push ancient humans into caves in search of shelter. According to the study, competition for resources among the remaining species may have been the cause of the extinction of Neanderthals.
Until now, scientists have not been able to reach a consensus on what led to the extinction of Neanderthals. Some previous research indicated that the extinction occurred naturally due to inbreeding with modern humans. Others believe that Neanderthals could have been a great competitor for resources as modern humans began to rise in numbers. Researchers in the new study believe that it is no coincidence that Neanderthals die right after a major shift in the planet’s magnetic poles.
Researchers turned to an ancient curie tree that was alive in the time of Neanderthals to look for its rings to record radiocarbon levels. The rings showed evidence of radiocarbon rise when the magnetic fields flipped, known as the Champagne trip. The team believes that this event could have contributed to the downfall of Neanderthals, but they admit that it is difficult to know exactly when they died.