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New Study Suggests Humans Lived In North America 130,000 Years Ago
In 1992, archaeologists working a highway construction site in San Diego County found the partial skeleton of a mastodon, an elephant-like animal now extinct. Mastodon skeletons aren't so unusual, but there was other strange stuff with it. "The remains were in association with a number of sharply broken rocks and broken bones," says Tom Demere, a paleontologist at the San Diego Natural History Museum. He says the rocks showed clear marks of having been used as hammers and an anvil. And some of the mastodon bones as well as a tooth showed fractures characteristic of being whacked, apparently with those stones. It looked like the work of humans. Yet there were no cut marks on the bones showing that the animal was butchered for meat. Demere thinks these people were after something else. "The suggestion is that this site is strictly for breaking bone," Demere says, "to produce blank material, raw material to make bone tools or to extract marrow." Marrow is a rich source of fatty calories. The scientists knew they'd uncovered something rare. But they didn't realize just how rare for years, until they got a reliable date on how old the bones were by using a uranium-thorium dating technology that didn't exist in the 1990s. The bones were 130,000 years old. That's a jaw-dropping date, as other evidence shows that the earliest humans got to the Americas about 15,000 to 20,000 years ago.
The study has been published in the journal Nature. |
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| Helge Ingstad |
It was very clear that this was a very, very old site. There were remains of sod walls. Fishermen assumed it was an old Indian site. Bu Indians didn't use that kind of buildings and houses. |
| Mike Davidson |
Our old site did not have very good support for the disabled, but our new site should soon have much better support. With all of our content in divs now, we can hide all but the relevant chunks of content and navigation with a simple alternate CSS file. |
| Steve Garvey |
I have been blessed to win a number of awards and be involved in numerous historical baseball moments over my 20-year career with the Los Angeles Dodgers and San Diego Padres. |
| Sebastian Bach |
Quebec City is the most European of any city in North America; they speak French all the time. There is a part of town called Old Quebec which is really like being in France. The architecture is just gorgeous, food, shopping. I'd say Quebec City is the most beautiful city in North America I've seen. |
| Jason Isbell |
I think great songs appeal to people at any age. Kids love the Beatles, too. Kids love Tom T. Hall. Of course, Tom T. wrote some things that were specifically for kids. But I think kids recognize quality more than they get credit for sometimes. |
| Gilbert K. Chesterton |
The object of a New Year is not that we should have a new year. It is that we should have a new soul and a new nose; new feet, a new backbone, new ears, and new eyes. Unless a particular man made New Year resolutions, he would make no resolutions. Unless a man starts afresh about things, he will certainly do nothing effective. |
| Orson Scott Card |
In all my study of history, I have never found a time or place I would rather have lived than now. |
| Karl Marx |
The human being is in the most literal sense a political animal, not merely a gregarious animal, but an animal which can individuate itself only in the midst of society. |
| Herb Caen |
I hope I go to Heaven, and when I do, I'm going to do what every San Franciscan does when he gets there. He looks around and says, 'It ain't bad, but it ain't San Francisco.' |
| Howard Bach |
Don Chew is the owner of the Orange County Badminton Club, the location where I train. He played badminton when he was young and always had the passion for it. He never made it at the international level, but he wanted to give back to the sport. The majority of the elite players train at Orange County Badminton Club. |
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Mars Had Big Rivers For Billions of Years, Study Suggests
A new study suggests that Mars once had giant rivers larger than anything on Earth after the planet lost most of its atmosphere to space. "That great thinning, which was driven by air-stripping solar particles, was mostly complete by 3.7 billion years ago, leaving Mars with an atmosphere far wispier than Earth's," reports Space.com. "But Martian rivers likely didn't totally dry out until less than 1 billion years ago, the new study found." From the report:
"We can start to see that Mars didn't just have one wet period early in its history and then dried out," study lead author Edwin Kite, an assistant professor of geophysical scien...
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I had a dream that I lived in Europe somewhere and I had this shed where I took chairs that my parents painted and tried to sell them. I had to take some of the chairs and scrape off the paint in places where they needed to be modified so that they would sell better. I was working one day when a girl with a broken arm walked up to me and asked me out. I told her I didn't live there and I was going back to the USA. She gave me her number anyway and then her mom showed up and made her leave. Then there was this whole other part of my dream where people were killing each other and there were some gangs and stuff but I don't know if that had anything to do with the chairs or if they were just in the same city or what.
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Scientists Confirm There Was Life On Earth 3.5 Billion Years Ago (http://www.pnas.org/content/early/2017/12/12/1718063115)
Paleobiologists have confirmed today that life forms existed some 3.5 billion years ago. The new study, published in the journal Proceedings of the National Academy of Sciences, uses the latest techniques to date the most aged remains available. Quartz reports:
The research, led by paleobiologist William Schopf of the University of California-Los Angeles and geoscientist John Valley of the University of Wisconsin-Madison, has been in the works for what seems a long time to most, but which the academics know is merely a blink of the eye in terms of life on Earth. The sp...
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currently working with a music promoter in switzerland to do an overseas show for Main Flow. basically i am working to book his flight from San Diego to Zurich. he resides in mexico now (from cincinatti) but it feels like quite an important job/ opportunity. would love to be a manager for artists like this m
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Humans Might Be Able To Sense Earth's Magnetic Field
A new study from researchers at the California Institute of Technology suggests that humans can sense the Earth's magnetic field. "We have not as a species lost the magnetic sensory system that our ancestors [millions of years ago] had," said Prof Joseph Kirschvink, leader of the research from the California Institute of Technology. "We are part of Earth's magnetic biosphere." The Guardian reports:
Writing in the journal eNeuro, Kirschvink and colleagues in the U.S. and Japan describe how they made their discovery after building a six-sided cage, the walls of which were made of aluminium to shield the setup from electromagnetic interfer...
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Shhhhh...
I've only broken 6 bones and torn one tendon. I'm a perfect specimen.
This post is a comment.
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Aren't we all just broken robots, really?
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'Great Dying': Rapid Warming Caused Largest Extinction Event Ever, Report Says (theguardian.com)
Rapid global warming caused the largest extinction event in the Earth's history, which wiped out the vast majority of marine and terrestrial animals on the planet, scientists have found. The mass extinction, known as the "great dying," occurred around 252m years ago and marked the end of the Permian geologic period. The study of sediments and fossilized creatures show the event was the single greatest calamity ever to befall life on Earth, eclipsing even the extinction of the dinosaurs 65m years ago. Up to 96% of all marine species perished while more than two-thirds of terrestrial species disappeared. The cataclysm was so severe it wiped out most of the planet's trees, insects, plants, liza...
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Bees Can Link Symbols To Numbers, Study Finds (phys.org)
Researchers have trained honeybees to match a character to a specific quantity, revealing they are able to learn that a symbol represents a numerical amount. The discovery, from the same Australian-French team that found bees get the concept of zero and can do simple arithmetic, also points to new approaches for bio-inspired computing that can replicate the brain's highly efficient approach to processing. Associate Professor Adrian Dyer said while humans were the only species to have developed systems to represent numbers, like the Arabic numerals we use each day, the research shows the concept can be grasped by brains far smaller ...
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The passenger pigeon went extinct in 1898. That means there are no living humans today that have seen one.
Crazy how every hundred years or so the world gets a whole new set of people.
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