A group of scientists found stone tools in a cave in central Mexico, as well as other evidence from 42 archaeological sites in faraway places, all of which reveal that humans arrived in North America more than 30,000 years ago, a period earlier than believed.
The scientists stated that "they found 1930 stone tools, among them small chips and fine blades, that might have been used to cut meat and small things that were probably used as limbs in the spears, which indicates that people lived in Chicheute Cave in a mountainous region in the Mexican state of Zacatecas ".
In the context, archaeologist Ciprian Ardelen, from the Autonoma de Zacatecas University in Mexico, who is the head of the research team in one of two studies published in the journal Nature, said, "The history of the tools ranges from 31,000 years to 12500 years, and Bedouin hunter-gatherers occupied the site regularly. For thousands of years. "
In addition, evidence from 42 locations throughout North America and the location of the land bridge that connected Siberia to Alaska during the last Ice Age revealed human existence dating back at least to a period called the Far Ice Age, when ice covered much of the continent, some 26,000 years ago to 19 thousand years and immediately after that. The study showed that humans were involved in the extinction of many large Ice Age mammals such as mammoths and camels.
According to previous studies, "mankind first appeared about 300,000 years ago in Africa before it subsequently spread around the world." However, the new findings contradict the traditional view that the first humans arrived in the Americas about 13,000 years ago and crossed the land bridge and were associated with Clovis culture known as distinct stone tools.
Scientists say that "a small number of people entered the continent earlier than previously understood, perhaps some of them by boat along a coastal road on the Pacific Ocean instead of crossing the land bridge, and some died without leaving a descendent."
"The population of the continent has expanded significantly after that about 14,700 years ago," said archaeologist Lorena Basira-Valdivia of the University of Oxford in England and the University of New South Wales in Australia.
The discovery of ancient human remains dating back 3000 years in Yemen
In August 2019, ancient human remains were found in caves on the outskirts of the Yemeni capital, Sanaa, which are scattered bones dating back more than 3,000 years. Within the chains of Jabal Shamlan, archaeologists say that the jawbones, femur and other remains that were found belonged to two bodies that were probably mummified.