The enteric nervous system (ENS) had been regarded as a digestive organ till; the remarkable discovery made by Michael Gershon that 90% of the body’s serotonin is located within the walls of the gastrointestinal (GI) tract.
This ignited interests of various neuroscientists, including psychiatrists, about the GI nervous system …
Scientists Find Signs of Intelligent Tool Use 300,000 Years Ago
Sixteen years ago, road workers detonated a controlled explosive to remove a large limestone boulder blocking a planned roadway outside of Tel Aviv in Israel. Soon after the dust settled, it became clear that the road would need to be rerouted.
The workers had stumbled upon a vast cave, one that had been sealed off for more than 200,000 years! For the researchers who soon began exploring the cave’s expansive interior, it was the find of a lifetime.
Now called Qesem Cave, the site has delivered a number of discoveries that live up to its explosive origin. Archaeologists found a 300,000-year-old fireplace, along with tortoise shells that showed signs of burning. Apparently, whoever live there had a taste for roast tortoise.
Exactly who lived there remains a mystery, however. While archaeologists have uncovered a handful of hominin teeth, they still aren’t sure which species they belong to. It could be Homo erectus, Homo neanderthalensis, or it might even be an entirely new species.
“We don’t know which type of human lived here,” Ron Barkai, an archaeologist at Tel Aviv University, told Ynet News. “We know that they acted differently than everyone else who lived in this area before them.”
Whoever inhabited Qesem many eons ago, a study recently published in Scientific Reports reveals that they were advanced tool-users