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Cave sediments suggest global cooling 13K years ago not caused by asteroid

Cave sediments suggest global cooling 13K years ago not caused by asteroid

Science
July 31 (UPI) -- Geochemical signatures found in sediments recovered from a Texas cave suggest the Younger Dryas, a period of global cooling that occurred 13,000 years ago, was caused by a series of Earth-based processes, not an extraterrestrial impact. Previously, scientists in search of an explanation for the Younger Dryas have pointed to spikes in several rare earth metals as evidence that an asteroid or comet impact triggered the cooling. Advertisement Most recently, when researchers looked at the sedimentary evidence, they found these spikes in rare earth metals actually featured relatively low concentrations of iridium, ruthenium, platinum, palladium and rhenium -- levels inconsistent with an extraterrestrial impact event. "The isotopic signatures and concentrations can be explained...
Cave remains offer new insights into Paleolithic mortuary rituals

Cave remains offer new insights into Paleolithic mortuary rituals

Science
June 15 (UPI) -- Ancient human remains found in a French cave have offered researchers new insights into the mortuary rituals of humans during the Paleolithic period. The cave, found in southwestern France at the end of the last century, was originally occupied by members of the Gravettian culture, approximately 30,000 years ago. Advertisement The hunter-gatherers were prolific cave artists; scientists have found more than 800 engravings inside the Grotte de Cussac cave. These early humans also carved Venus figurines and performed elaborate burial rituals. Now, paleontologists have gained new insights into the ways the Paleolithic people handled the deceased prior to burial, detailing their discoveries in a new paper published Monday in the journal Proceedings of the National Academy of S...
Oilers’ Colby Cave remains in medically induced coma after brain surgery

Oilers’ Colby Cave remains in medically induced coma after brain surgery

Sports
April 9 (UPI) -- Edmonton Oilers forward Colby Cave remains in a medically induced coma after suffering a brain bleed earlier this week, the team announced Thursday. The Oilers, through Cave's family, provided an update on the forward's condition on their official website. "Colby is still in a medically induced coma. This is giving his brain time to heal and rest from all he's been through," the statement said. "We would like to thank the Oilers organization, the entire hockey community, all of our friends and family, and everyone who has shown us love and support. "We would like to send a big thank you to Colby's critical care team, neurosurgeons and nurses at Sunnybrook Hospital. We appreciate all that you are doing for our Colby." The family of #Oilers & @Condors forward Colby Ca...
Ancient shark found inside Kentucky’s Mammoth Cave

Ancient shark found inside Kentucky’s Mammoth Cave

Science
Jan. 30 (UPI) -- Scientists have identified the 330-million-year-old remains of an ancient shark inside Kentucky's Mammoth Cave National Park. While exploring and mapping Mammoth Cave's many remote chambers, expert spelunkers Rick Olson and Rick Toomey happened upon a fossilized jaw and several teeth embedded in a cave wall. Olson and Toomey took pictures of the fossils and sent them to Vincent Santucci, senior paleontologist with the National Park Service. Santucci reached out to John-Paul Hodnett, a paleontologist and expert in the study of Paleozoic sharks. Hodnett, program coordinator at the Dinosaur Park in Maryland, came to visit the Mammoth Cave fossil. He was excited by what he found. There was enough fossil evidence to identify the ancient shark species as Saivodus striatus. "T...
World’s oldest figurative cave painting depicts ancient hunting scene

World’s oldest figurative cave painting depicts ancient hunting scene

Science
Dec. 11 (UPI) -- Artistic expression is a vital part of the human story, and it's a story that began at least 44,000 years ago. The discovery of an ancient cave painting on the Indonesian island of Sulawesi has pushed the origins of figurative cave painting back further than ever before. The painting was first discovered by Hamrullah, an Indonesian spelunker and archaeologist, while working on a government survey in 2017. After noticing a hole in the ceiling at a cement plant where the survey was being conducted, Hamrullah clambered up a wall, through the opening and shimmied up a tunnel to discover a cave decorated in ancient pigments. The painting discovered by Hamrullah -- and since surveyed by an international team of archaeologists -- is described this week in a new paper published ...