Nearly two-thirds of Australian children surveyed in a recent study received at least one form of grooming-related communication from a stranger online in the past year, while almost one-third reported receiving direct requests for sexual information or interactions.
Submerged aquatic vegetation (SAV), one of the Chesapeake Bay's most important indicators of ecosystem health, increased by 7% in 2025, according to researchers at William & Mary's VIMS & Batten School.
Ocean color remote sensing is a vital tool for monitoring global ocean carbon sinks and primary productivity. However, the on-orbit calibration accuracy of satellite sensors is insufficient, and weak marine signals account for only approximately 10% of the signals received by satellites, leading to significant uncertainties in ocean color remote-sensing applications.
Southeast Asia has spent decades trying to tackle haze from forest fires. Yet every few years, the region finds itself breathing it again. The transboundary environmental problem has become a recurrent phenomenon in the region.
Cryo-electron microscopy (cryo-EM) has become a powerful tool for determining the structures of proteins, viruses and molecular complexes at near-atomic resolution. However, achievable resolution is fundamentally limited by the Nyquist sampling frequency, which is determined by detector pixel size and microscope magnification. Once this physical limit is reached, researchers typically must recollect data at higher magnification, requiring additional microscope time, increased storage capacity and often fewer particles per image.
Squinting through my binoculars, I scanned the dense branches of a black spruce, trying my best to catch a glimpse of the thin legs of a small black, white and yellow songbird. I was on the hunt for a yellow-rumped warbler—a bird affectionately called "butter-butt" by birdwatchers after the distinctive buttery yellow patch of feathers above its tail.
Since the 1950s, the Tibetan Plateau has experienced pronounced warming and wetting. However, an overall shift toward wetter conditions does not necessarily mean that drought risk has diminished. On the contrary, against the backdrop of continued warming, compound hot-dry events—characterized by the simultaneous occurrence of high temperatures and drought—have become an increasingly important climate risk across the plateau.
Nearly every galaxy has a supermassive black hole. The few that don't have had theirs ejected during a galactic collision. That's because galaxies and their black holes have formed hand in hand. There is still some debate as to whether galaxies formed around the seeds of supermassive black holes or the other way around, but there is plenty of evidence to support the idea that the two evolve together.
During some days in August, science takes center stage. The experts are surveying the little-known diversity of fungi found in the alpine Dryas heath. They may even discover species that have never been described scientifically before.
One of the oldest known 3D fossils of an animal has been discovered in a sheep field in the Norwegian Arctic, the first new major site of its kind anywhere in Europe in decades.
