The evolutionary history of the bacteria in your guts predates the appearance of humans, and mirrors that of our great ape relatives, according to a genetic study.
The research suggests that microbes in our ancestors’ intestines split into new evolutionary lineages in parallel with splits in the ape family tree.
Long before the advent of social media, human social networks were built around sharing a much more essential commodity: food. Now, researchers reporting on the food sharing networks of two contemporary groups of hunter-gatherers provide new insight into fundamental nature of human social organization.
The elongated skulls of Paracas in Peru caused a stir in 2014 when a geneticist that carried out preliminary DNA testing reported that they have mitochondrial DNA “with mutations unknown in any human, primate, or animal known so far”. Now a second round of DNA testing has been completed and the results are just as controversial – the skulls tested, which date back as far as 2,000 years, were shown to have European and Middle Eastern Origin. These surprising results change the known history about how the Americas were populated.
People who use cocaine or methamphetamine on a regular basis may have differences in those brain regions that are involved in choosing between right and wrong, compared to people who don’t use these drugs, according to a new study of prison inmates.
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Related: MDMA needs to be studied, not ‘demonized,’ researchers say
A group of researchers have developed a new map of the cerebral cortex of the human brain, revealing 100 new distinct regions in each hemisphere. Representing the most detailed map of the brain yet, it’s an achievement of a longstanding goal
Related: How the Brain Builds Memory Chains
It was a moment that mingled triumph with relief as the UK’s first double hand transplant patient awoke from a painstaking 12-hour operation with two new sets of fingers.
“It’s better than a lottery win because you feel whole again,” said Chris King as he recuperated at the Leeds General Infirmary. “They look absolutely tremendous,” he added. “They’re my hands. They really are my hands.”
Chinese scientists are embarking on what appear to be the first human trials with the Crispr gene editing tool, the latest effort by the country’s researchers to master a technology that might someday be a potent tool in developing therapies worldwide.
Her computer, Karin Strauss says, contains her “digital attic”—a place where she stores that published math paper she wrote in high school, and computer science schoolwork from college.
She’d like to preserve the stuff “as long as I live, at least,” says Strauss, 37. But computers must be replaced every few years, and each time she must copy the information over, “which is a little bit of a headache.”
MENOPAUSE need not be the end of fertility. A team claims to have found a way to rejuvenate post-menopausal ovaries, enabling them to release fertile eggs, New Scientist can reveal.
The team says its technique has restarted periods in menopausal women, including one who had not menstruated in five years. If the results hold up to wider scrutiny, the technique may boost declining fertility in older women, allow women with early menopause to get pregnant, and help stave off the detrimental health effects of menopause.
The zero-fuel aeroplane, Solar Impulse, has left the Egyptian capital, Cairo, on the last leg of its global tour.
The aircraft should take about 48 hours to reach Abu Dhabi, UEA – the place it began the circumnavigation in March 2015.
A new detailed study of notes and sketches by Leonardo da Vinci has identified a page of scribbles in a tiny notebook as the place where Leonardo first recorded the laws of friction. The research also shows that he went on to apply this knowledge repeatedly to mechanical problems for more than 20 years.
Seven priceless Mayan artifacts looted decades ago from Guatemala are returning to the land of their creation after a representative for an antiquities collector grew suspicious of their origin and contacted the FBI.
Experts called in by the agency quickly determined the limestone pieces, all more than a thousand years old, were removed illegally from two specific regions of Guatemala and sold to a California collector in the 1970s.
Travellers on the Silk Road, the most famous trade route of the ancient world, were bringing more than the precious fabric with them out of China. Some bamboo sticks with scraps of grimy cloth wound around them have been identified as bottom wipers from a latrine pit in a 2,000-year-old Chinese relay station on the Silk Road. They have also preserved the first solid evidence of disease spread from east to west by travellers.
British archaeologists working on the Must Farm project in England’s Cambridgeshire Fens can hardly restrain themselves.
Their online diary effervesces with superlatives — “truly fantastic pottery,” “truly exceptional textiles,” “a truly incredible site,” “the dig of a lifetime.”
The death of King Albert I of Belgium in 1934 — officially a climbing accident — still fuels speculation. Forensic geneticists have now compared DNA from blood found on the scene in 1934 to that of two distant relatives. Their analysis confirms that the blood really is that of Albert I. This conclusion is at odds with several conspiracy theories about the king’s death.
Archaeologists have discovered one of the largest Viking axes ever found, in the tomb of a 10th-century “power couple” in Denmark.
Kirsten Nellemann Nielsen, an archaeologist at the Silkeborg Museum who is leading excavations at the site near the town of Haarup, said Danish axes like the one found in the tomb were the most feared weapons of the Viking Age.
Archaeologists in Texas thought they’d made an important discovery in the 1990s, when they unearthed a trove of stone tools dating back 13,000 years, revealing traces of the oldest widespread culture on the continent.
But then, years later, they made an even more powerful find in the same place — another layer of artifacts that were older still.
Related: 16,700-Year-Old Tools Found in Texas Change Known History of North America