Since ancient times, humans have been trying to exercise control over their reproductive decisions, whether to avoid undesired pregnancy or to improve their chances of conceiving. In addition, the risks of pregnancy and childbirth have always been a major challenge.
Higher global temperatures are increasing the frequency of flash droughts
Our understanding of how the brain and immune system interact has changed substantially over the past years and decades. Initially, the brain was thought to be immune privileged and isolated from the rest of the body.
Researchers sound alarm over damage caused by popular meteorite-hunting technique
The males of an invasive ant species are chimeras of two distinct genetic lineages
Sweeping new study based on archaeological evidence, chemical isotope analysis, and ancient DNA “totally changes the game”
Drug developers are now trying to target ceramides, which appear to contribute to a range of metabolic disorders
Virology database cuts off—and then reinstates—scientists who found and analyzed data collected 3 years ago by team in China
“It would be in the range of serious crap happening.”
At a basic level, humanity’s survival odds come down to one thing: the chances of a giant space rock slamming into the planet and sending us the way of the dinosaurs. One way to calibrate that hazard is to look at the size of Earth’s recent large impact craters.
Lipids called ceramides may be better predictors of cardiovascular problems than cholesterol. Doctors and pharma are waking up to their potential
The gut microbiota is critical for human health. Understanding how beneficial bacteria colonize the gut enables medical interventions that promote gut health. Krypotou et al. discovered a mechanism that enhances the fitness of a commensal bacterium in the gut.
Imaginary numbers—the square roots of negative numbers—are an inescapable part of quantum theory, a study shows
Open-office designs create productivity and health problems. New insights from Deaf and autistic communities could fix them
How do giant filter-feeding whales find their tiny prey? The answer could be key to saving endangered species
But will doctors embrace the grainier, lower-resolution images of the body’s insides?
Overlooked by the oil industry, natural hydrogen could power society for thousands of years
Giant tanks full of Atlantic salmon could help meet rising demand while lowering environmental impact
Genes reveal striking diversity within similar ice age cultures
Our capability to reconstruct past landscapes and the processes that shape them underpins our understanding of paleo-Earth. We take advantage of a global-scale landscape evolution model assimilating paleoelevation and paleoclimate reconstructions over the past 100 million years.
The Hayabusa2 spacecraft made two landings on the asteroid (162173) Ryugu in 2019, during which it collected samples of the surface material. Those samples were delivered to Earth in December 2020. The colors, shapes, and morphologies of the returned samples are consistent with those observed on Ryugu by Hayabusa2, indicating that they are representative of the asteroid.
Many ask authors to disclose use of ChatGPT and other generative artificial intelligence
Lack of the nutrient limits the plants’ productivity, key to climate and ecosystems
The causes of long COVID, which disables millions, may come together in the brain and nervous system
New experiments can re-create the young cosmos, when it was a mash of fundamental particles, more precisely than ever before
Plato was right: newborns do math
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