Scientists have unearthed 188 previously unknown types of CRISPR systems buried in the genomes of simple microorganisms. Best known as a powerful gene-editing tool, CRISPR actually comes from an inbuilt defense system found in bacteria and simple microbes called archaea. CRISPR systems include pairs of “molecular scissors” called Cas enzymes, which allow microbes to cut … Read more
Lab-grown meat, made from chicken cells cultured in steel tanks, can now be produced and sold in the U.S. for the first time. Two California-based companies — Upside Foods and Good Meat, a subsidiary of Eat Just — became the first in the nation to get approval from the U.S. Department of Agriculture (USDA) to … Read more
Neanderthal genes may be one cause of the disorder nicknamed the “Viking disease,” in which fingers become frozen in a bent position, a new study finds. The study, published June 14 in the journal Molecular Biology and Evolution, finds gene variants that were inherited from Neanderthals that dramatically increase the odds of developing the condition, … Read more
Sure, not everyone has pipes like Adele. But we all know people who truly struggle to match and comprehend musical pitch, and they’re usually labeled “tone deaf.” But is tone deafness a real condition? And if so, why are some people tone deaf? In short, yes, tone deafness is a genuine neurological disorder. It’s called … Read more
Scientists have long debated the greatest possible age of a person, with previous studies placing the limit at up to 150 years. But in the past 25 years, no one has surpassed the record for the world’s oldest person, held by Jean Louise Calment, who died at age 122 in 1997. “This has led people … Read more
Telomeres are the “caps” that protect the ends of DNA strands from being destroyed by a cell. They are made up of areas of repeated DNA sequences combined with specific proteins at the ends of chromosomes — the tightly wound structures of DNA and proteins inside cells. Telomeres play a role in how fast cells … Read more
Somewhere out there, there’s probably a person who has your face. And this unrelated look-alike may have more in common with you than appearances, a new study suggests. The surprising research, based on 32 pairs of unrelated doppelgängers from around the world, shows that two people who have a strong facial similarity to each other … Read more
Could a brain ever exist on its own, divorced from or independent of a body? For a long time, philosophers have pondered such “brain-in-a-vat” scenarios, asking whether isolated brains could maintain consciousness when separated from their bodies and senses. Typically, a person’s experiences are characterized by a web of interactions between the human brain, body … Read more
Death comes for all, but aging doesn’t — at least for some animal species. Two new studies published Thursday (June 23) in the journal Science found that turtles and tortoises have remarkably slow rates of aging. In captivity, without the stress of finding food and avoiding predators, some may not age at all. “That is … Read more
A new, enormous family tree for all of humanity attempts to summarize how all humans alive today relate both to one another and to our ancient ancestors. To build this family tree, or genealogy, researchers sifted through thousands of genome sequences collected from both modern and ancient humans, as well as ancient human relatives, according to … Read more
