Science Magazine – March 24, 2023 issue: This color-enhanced scanning electron microscopy image shows Ti2CCl2 MXenes grown by chemical vapor deposition. The two-dimensional layers of this material grew perpendicular to the substrate and then folded into microspherical structures. Ion intercalation between two-dimensional MXene sheets has potential for energy storage and other applications.
“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.
Science Magazine – March 17, 2023 issue: An alpine newt (Ichthyosaura alpestris) walks to a breeding pond in the Alps, France. Many amphibians have a cryptic upper side but a normally concealed, conspicuous underside. These hidden signals have evolved for several reasons, including as a warning display to would-be predators.
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.
Science Magazine – March 10, 2023 issue: A honey bee (Apis mellifera) performs a complex dance to communicate resource location and value. Research now shows that novice bees dance better and communicate location more accurately if they were previously able to follow and socially learn from more experienced dancers.
Science Magazine – March 3, 2023 issue: The substantial grapevine diversity in the world, showcased here by the vigorous ‘Saperavi’ variety in the Kakheti region of Georgia, reveals secrets about human agricultural history. A genomic survey uncovers two concurrent domestication origins of this essential vine. It also shows how Western Asian table grapes diversified along human migration trails into muscat and unique western wine grapes.
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.
Science Magazine (January 27, 2023) – The Amazon forest is changing rapidly as a result of human activities, including deforestation for agriculture, such as these soybean fields in Belterra, Pará, Brazil. Remaining areas of forest are experiencing an increased incidence of fires, drought, and the effects of neighboring land uses. These changes threaten local biodiversity and communities and alter the global climate.