Miniature, lab-grown models of the human brain’s wrinkled surface can be used to patch injuries in the brains of living rats and thus repair broken connections in the rodents’ sensory processing systems, a new study shows. Someday, such minibrains — known as brain organoids — could potentially be used to mend the brains of human … Read more
Once life gains even the tiniest foothold on a planet, it may have the power to transform that world, forcing us to broaden our definition of “habitable,” new research suggests. We don’t really know where life might arise. We have only one example of a life-hosting planet, Earth, which started to get interesting perhaps only … Read more
Scientists have uncovered a mysterious network of brain connections that is linked to several psychiatric disorders, including schizophrenia, depression and obsessive-compulsive disorder (OCD). This shared brain circuitry could help reveal why many patients who are diagnosed with one psychiatric illness also meet the criteria for a second. “Half of the people we treat meet criteria … Read more
A lethal pulse of ultraviolet (UV) radiation may have played a role in Earth’s biggest mass extinction event, fossilized pollen grains reveal. Pollen that dates to the time of the Permian-Triassic mass extinction event, roughly 250 million years ago, produced “sunscreen” compounds that shielded against harmful UV-B radiation, the analysis found. At that time, approximately … Read more
The moment a person dies, their body begins to break down as cells wither and bacteria invade. But how long does it take for a body to fully decompose? Although the process of decomposition starts within minutes of death, there are a number of variables, including the ambient temperature, soil acidity and coffin materials, which … Read more
Falling in love may hit your heart, but what does it do to your brain? It turns out that falling in love corresponds with the release of key brain chemicals from certain regions of the brain, Dr. Gül Dölen (opens in new tab), an associate professor of neuroscience at the Johns Hopkins University School of … Read more
Ancient microbes whose existence predates the rise of nucleus-carrying cells on Earth may hold the secrets to how such complex cells first came to be. Now, for the first time, scientists have grown a large enough quantity of these microbes in the lab to study their internal structure in detail, Science reported. Researchers grew an … Read more
When a glassfrog falls asleep, it vanishes. Nestled atop a lush leaf, the frog’s bright green back blends right in, while its underbelly’s reddish hue quickly grows transparent. Now, a new study in the journal Science (opens in new tab) reveals that the northern glassfrog (Hyalinobatrachium fleischmanni) pulls off this feat by removing almost 90% … Read more
Once the stuff of science fiction, lab-grown meat could become reality in some restaurants in the United States as early as this year. Executives at cultivated meat companies are optimistic that meat grown in massive steel vats could be on the menu within months after one company won the go-ahead from a key regulator. In … Read more
Einstein’s theory of general relativity upended humanity’s understanding of the universe more than a century ago, and since then, scientists have discovered that the steady march of time is anything but steady. Among the haunting implications of general relativity is that time passes more quickly at the top of every staircase in the world than … Read more
