东莞大型工业吸尘器(丽水工业吸尘器) (今日更新中)

The remains of an ancient ape found in a Bavarian clay pit suggest that humans’ ancestors began standing upright millions of years earlier than previously thought, scientists said Wednesday.An international team of researchers says the fossilized partial skeleton of a male ape that lived almost 12 million years ago in the humid forests of what is now southern Germany bears a striking resemblance to modern human bones. In a paper published by the journal Nature, they concluded that the previously unknown species — named Danuvius guggenmosi — could walk on two legs but also climb like an ape.The findings “raise fundamental questions about our previous understanding of the evolution of the great apes and humans,” said Madelaine Boehme of the University of Tuebingen, Germany, who led the research.The question of when apes evolved bipedal motion has fascinated scientists since Charles Darwin first argued that they were the ancestors of humans. Previous fossil records of apes with an upright gait — found in Crete and Kenya — dated only as far back as 6 million years ago.Boehme, along with researchers from Bulgaria, Germany, Canada and the United States, examined more than 15,000 bones recovered from a trove of archaeological remains known as the Hammerschmiede, or Hammer Smithy, about 70 kilometers (44 miles) west of the Germany city of Munich.Among the remains they were able to piece together were primate fossils belonging to four individuals that lived 11.62 million years ago. The most complete, an adult male, likely stood about 1 meter (3 feet, 4 inches) tall, weighed 31 kilograms (68 pounds) and looked similar to modern-day bonobos, a species of chimpanzee.“It was astonishing for us to realize how similar certain bones are to humans, as opposed to great apes,” Boehme said.Thanks to several well-preserved vertebra, limb, finger and toe bones, the scientists were able to reconstruct how Danuvius moved, concluding that while it would have been able to hang from branches by his arms, it could also straighten its legs to walk upright.“This changes our view of early human evolution, which is that it all happened in Africa,” Boehme told The Associated Press in an interview.Like humans, Danuvius had an S-shaped spine to hold its body upright while standing. Unlike humans, though, it had a powerful, opposable big toe that would have allowed it to grab branches with its foot and safely walk through the treetops.Fred Spoor, a paleontologist at the Natural History Museum in London, called the fossil finds “fantastic” but said they would likely be the subject of much debate, not least because they could challenge many existing ideas about evolution.“I can see that there will be a lot of agonizing and re-analysis of what these fossils mean,” said Spoor, who wasn’t involved in the study. 2833

The PGA Tour has canceled the remaining three rounds of the PLAYERS Championship, and will not resume operations until April 5 at the earliest, according to a Tour announcement on Thursday. Earlier on Thursday, the PGA Tour announced that the final three rounds of the PLAYERS would be played without spectators. Golf is a unique sport in the sense that players can remain isolated from each other on the course. A fact that PGA Tour Commissioner Jay Monohan was originally comfortable with. "We feel like we have, because of the nature of that and the fact that you've got 144 players here and over the course of a round our players generally do socially distance themselves, we felt like by taking this step to address the problem with our fans, we're in a position where we can continue to operate the events as of right now," he said. "And you look at there are other circumstances that led to the decisions that those leagues made that are unique to those leagues that we're not currently faced with. And that's something that we thought about and talked about, but ultimately when you break it down and you think about what's going to happen here over the course of the next three days and then going forward, we're comfortable having our players continue to play at this time.But by Thursday evening, the PGA Tour opted to follow nearly every other major pro and college sports organization amid the spread of coronavirus. "We have pledged from the start to be responsible, thoughtful and transparent with our decision process," the PGA Tour said in a statement. "We did everything possible to create a safe environment for our players in order to continue the event throughout the weekend, and we were endeavoring to give our fans a much-needed respite from the current climate. But at this point – and as the situation continues to rapidly change – the right thing to do for our players and our fans is to pause."PGA Tour star Rory McIlroy said after the decision was made to ban fans, but before the decision to cancel the remaining rounds, that he was not surprised to see golf being kept away from fans. "I think when you look at Europe and they, you see what they have done there, especially Italy, obviously the northern part was on lockdown earlier this week and then obviously now it's all of Italy. Every school and university has been shut in Ireland. So not surprising, given what's happened over there. I think it's just to try to curtail this and try to stop it spreading. I thought it was the right move," he said. Four other upcoming tournaments were also impacted by the decision. The next tournament on the PGA Tour's calendar is its signature event The Masters, which starts April 9. 2722

The remains of an ancient ape found in a Bavarian clay pit suggest that humans’ ancestors began standing upright millions of years earlier than previously thought, scientists said Wednesday.An international team of researchers says the fossilized partial skeleton of a male ape that lived almost 12 million years ago in the humid forests of what is now southern Germany bears a striking resemblance to modern human bones. In a paper published by the journal Nature, they concluded that the previously unknown species — named Danuvius guggenmosi — could walk on two legs but also climb like an ape.The findings “raise fundamental questions about our previous understanding of the evolution of the great apes and humans,” said Madelaine Boehme of the University of Tuebingen, Germany, who led the research.The question of when apes evolved bipedal motion has fascinated scientists since Charles Darwin first argued that they were the ancestors of humans. Previous fossil records of apes with an upright gait — found in Crete and Kenya — dated only as far back as 6 million years ago.Boehme, along with researchers from Bulgaria, Germany, Canada and the United States, examined more than 15,000 bones recovered from a trove of archaeological remains known as the Hammerschmiede, or Hammer Smithy, about 70 kilometers (44 miles) west of the Germany city of Munich.Among the remains they were able to piece together were primate fossils belonging to four individuals that lived 11.62 million years ago. The most complete, an adult male, likely stood about 1 meter (3 feet, 4 inches) tall, weighed 31 kilograms (68 pounds) and looked similar to modern-day bonobos, a species of chimpanzee.“It was astonishing for us to realize how similar certain bones are to humans, as opposed to great apes,” Boehme said.Thanks to several well-preserved vertebra, limb, finger and toe bones, the scientists were able to reconstruct how Danuvius moved, concluding that while it would have been able to hang from branches by his arms, it could also straighten its legs to walk upright.“This changes our view of early human evolution, which is that it all happened in Africa,” Boehme told The Associated Press in an interview.Like humans, Danuvius had an S-shaped spine to hold its body upright while standing. Unlike humans, though, it had a powerful, opposable big toe that would have allowed it to grab branches with its foot and safely walk through the treetops.Fred Spoor, a paleontologist at the Natural History Museum in London, called the fossil finds “fantastic” but said they would likely be the subject of much debate, not least because they could challenge many existing ideas about evolution.“I can see that there will be a lot of agonizing and re-analysis of what these fossils mean,” said Spoor, who wasn’t involved in the study. 2833

The Securities and Exchange Commission has asked a federal judge to hold Tesla CEO Elon Musk in contempt for violating a settlement deal reached last year.Musk 172

The suspect in Thursday's school shooting in Santa Clarita, California, that killed two victims and injured three others died on Friday, a sheriff's office homicide official confirmed to ABC News. Scripps has learned the identity of the suspect, but is not naming the suspect at this time. The suspect reportedly turned 16 on Thursday. The suspect was hospitalized on Thursday following the shooting due to a self-inflicted gunshot wound. Hospital officials said the 16-year-old suspect was in grave condition. The suspect was a junior at Saugus High School, the site of Thursday's shooting. Students Gracie Muehlberger and Dominic Blackwell were also killed during Thursday's shooting. 698

来源：资阳报