Gene-edited foods are safe, Japanese panel concludes
Japan will allow gene-edited foodstuffs to be sold to consumers without safety evaluations as long as the techniques involved meet certain criteria, if recommendations agreed on by an advisory panel yesterday are adopted by the Ministry of Health, Labour and Welfare. This would open the door to using CRISPR and other techniques on plants and animals intended for human consumption in the country.
People with dwarfism and cleft palate may have been revered in ancient times
Researchers have been finding them for decades: bones that are too heavy or too light; too long or too short; twisted, perforated, or studded with protruding growth. They’re a sign that someone in the past suffered from a rare disease, often defined today as affecting fewer than one in 2000 people, such as dwarfism or osteopetrosis, a disorder that causes dense, brittle bones.
The Black Death may have transformed medieval societies in sub-Saharan Africa
Medieval sub-Saharan Africa’s few written records make no mention of plague, and the region lacks mass graves resembling the “plague pits” of Europe. Nor did European explorers of the 15th and 16th centuries record any sign of the disease, even though outbreaks continued to beset Europe. Now, some researchers point to new evidence from archaeology, history, and genetics to argue that the Black Death likely did sow devastation in medieval sub-Saharan Africa.
Has a second person with HIV been cured?
Timothy Ray Brown, aka the “Berlin patient,” the only person to be cured of HIV, may finally have company. A decade after Brown became famous thanks to a stem cell transplant that eliminated his HIV infection, a similar transplant from a donor who has HIV-resistant cells appears to have cured another man, dubbed the “London patient.”
New way to turn carbon dioxide into coal could ‘rewind the emissions clock’
If humans hope to limit climate change to just 2°C of warming, we’ve got a lot of work to do, scientists say: reducing emissions, planting trees, and scrubbing carbon dioxide (CO2) from the skies with the latest technologies. Now, a new process can convert gaseous CO2—the product of burning fossil fuels—into solid carbon at room temperature, using only a trickle of electricity. But getting it to work on a planet-wide scale will be a formidable challenge.
Ancient humans hunted monkeys for tens of thousands of years
If you picture early humans dining, you likely imagine them sitting down to a barbecue of mammoth, aurochs, and giant elk meat. But in the rainforests of Sri Lanka, where our ancestors ventured about 45,000 years ago, people hunted more modest fare, primarily monkeys and tree squirrels. Then they turned the bones of these animals into projectiles to hunt more of them. The practice continued for tens of thousands of years, making this the longest known record of humans hunting other primates, archaeologists report today.
Researchers hung men on a cross and added blood in bid to prove Turin Shroud is real
In an attempt to prove that the Turin Shroud—a strip of linen that some people believe was used to wrap Jesus’s body after his crucifixion and carries the image of his face—is real, researchers have strapped human volunteers to a cross and drenched them in blood. Most mainstream scientists agree the shroud is a fake created in the 14th century,
Stonehenge, other ancient rock structures may trace their origins to monuments like this
Stonehenge may be the most famous example, but tens of thousands of other ancient sites featuring massive, curiously arranged rocks dot Europe. A new study suggests these megaliths weren’t created independently but instead can be traced back to a single hunter-gatherer culture that started nearly 7000 years ago in what is today the Brittany region of northwestern France. The findings also indicate societies at the time were better boaters than typically believed, spreading their culture by sea.
Evidence mounts that gut bacteria can influence mood, prevent depression
Of all the many ways the teeming ecosystem of microbes in a person’s gut and other tissues might affect health, its potential influences on the brain may be the most provocative. Now, a study of two large groups of Europeans has found several species of gut bacteria are missing in people with depression. The researchers can’t say whether the absence is a cause or an effect of the illness, but they showed that many gut bacteria could make substances that affect nerve cell function—and maybe mood.
A storied Russian lab is trying to push the periodic table past its limits—and uncover exotic new elements
From certain angles, the Flerov Laboratory of Nuclear Reactions here looks more like an auto repair shop than a legendary scientific institute. Scientists in dirty blue smocks walk around while an oil pump thumps out a techno beat. Tables are strewn with bolts and cleaning fluids, including a vodka bottle half full of ethanol. And spare parts are everywhere—bins, shelves, whole walls full of metal whatsits in all manner of disrepair.