New view of North Star reveals spotted surface
High-resolution images show large spots on the surface of Polaris.
Deadly sea snail toxin could be key to making better medicines
Scientists are finding clues for how to treat diabetes and hormone disorders in an unexpected place: a toxin from one of the most venomous animals on the planet.
Image: coxy58/Shutterstock.com
Adaptive 3D printing system to pick and place bugs and other organisms
A new adaptive 3D printing system can identify the positions of randomly distributed organisms and safely move them to specific locations for assembly.
Analyzing 'Finnegans Wake' for novel spacing between punctuation marks
James Joyce's tome 'Finnegans Wake' famously breaks the rules of normal prose through its unusual, dreamlike stream of consciousness, and new work in chaos theory takes a closer look at how Joyce's challenging novel stands out mathematically. Researchers compared the distribution of punctuation marks in various experimental novels to determine the underlying order of 'Finnegans Wake' and by statistically analyzing the texts, researchers found the tome exhibits an unusual but statistically identifiable structure. The wide singularity spectrum was perfectly symmetrical, meaning sentence length variability follows an orderly curve.
Spectacular increase in the deuterium/hydrogen ratio in Venus' atmosphere
Our understanding of Venus' water history and the potential that it was once habitable in the past is being challenged by recent observations.
Evidence stacks up for poisonous books containing toxic dyes
Some of the attractive hues of brightly colored, cloth-bound books from the Victorian era come from dyes that could pose a health risk to readers, collectors or librarians. The latest research on these 'poison books' used three techniques -- including one that hasn't previously been applied to books -- to assess dangerous dyes in a university collection and found some volumes had levels that might be unsafe.
Study explains why laws are written in an incomprehensible style
A new study on 'legalese' suggests this convoluted language acts to convey a sense of authority in legal documents. The researchers also found that even non-lawyers use legalese when asked to write laws.
How 'winner and loser effects' impact social rank in animals -- and humans
A new article provides a narrative review of the relevant similarities and distinctions between nonhumans and humans to assess the causes and consequences of winner and loser effects in humans.
Searching old stem cells that stay young forever
The sea anemone Nematostella vectensis is potentially immortal. Using molecular genetic methods, developmental biologists have now identified possible candidates for multipotent stem cells in the sea anemone for the first time. These stem cells are regulated by evolutionary highly conserved genes.
Spider exploits firefly's flashing signals to lure more prey
Fireflies rely on flashing signals to communicate to other fireflies using light-emitting lanterns on their abdomens. In fireflies of the species Abscondita terminalis, males make multi-pulse flashes with two lanterns to attract females, while females make single-pulse flashes with their one lantern to attract males. Now researchers have evidence that an orb-weaving spider (Araneus ventricosus) manipulates the flashing signals of male fireflies ensnared in its web such that they mimic the typical flashes of a female firefly, thereby luring other males to serve as their next meal.
Tracking down the asteroid that sealed the fate of the dinosaurs
The asteroid that led to the extinction of the dinosaurs 66 million years ago probably came from the outer solar system.
Hailstone library to improve extreme weather forecasting
Researchers are measuring and scanning samples for a global 'hailstone library'. Storm simulations using 3-D modelling of real hailstones -- in all sorts of weird shapes from oblong to flat discs or with spikes coming out -- show it behaves differently than spherical hail shapes. Data from the hail library could lead to more accurate storm forecasts.
Researchers are setting out to challenge our misconceptions about the Dodo, one of the most well-known but poorly understood species of bird. Researchers have undertaken the most comprehensive review of the taxonomy of the Dodo and its closest relative, the Rodriguez Island Solitaire.
New research shows unprecedented atmospheric changes during May's geomagnetic superstorm
On May 11, a gorgeous aurora surprised stargazers across the southern United States. That same weekend, a tractor guided by GPS missed its mark. What do the visibility of the northern lights have in common with compromised farming equipment in the Midwest? A uniquely powerful geomagnetic storm, according to new research.
Engineers design tiny batteries for powering cell-sized robots
A zinc-air microbattery could enable the deployment of cell-sized, autonomous robots for drug delivery within in the human body, as well as other applications such as locating leaks in gas pipelines.
Blind cavefish have extraordinary taste buds
A biologist studies blind cavefish, a species of fish that dwell in cave ponds in Mexico. He looked at the timeline for when the cavefish develop additional taste buds on the head and chin, finding the taste bud expansion starts at five months and continues into adulthood.
Cleaning up the aging brain: Scientists restore brain's trash disposal system
Scientists have restored the brain's waste-clearing process in aging mice, offering potential new treatment for Alzheimer's and Parkinson's using existing drugs.
Surprise finding in study of environmental bacteria could advance search for better antibiotics
Researchers studying bacteria from freshwater lakes and soil say they have determined a protein's essential role in maintaining the germ's shape. Because the integrity of a bacterial cell's 'envelope' or enclosure is key to its survival, the finding could advance the search for new and better antibiotics.
Why do plants wiggle? New study provides answers
Decades after his voyage on the HMS Beagle, Charles Darwin became fascinated by why plants move as they grow -- spinning and twisting into corkscrews. Now, more than 150 years later, a new study may have solved the riddle.
Engineers conduct first in-orbit test of 'swarm' satellite autonomous navigation
With 2D cameras and space robotics algorithms, astronautics engineers have created a navigation system able to manage multiple satellites using visual data only. They just tested it in space for the first time.
Physicists throw world's smallest disco party
A new milestone has been set for levitated optomechanics as a group of scientists observed the Berry phase of electron spins in nano-sized diamonds levitated in vacuum.
Galaxies in dense environments tend to be larger, settling one cosmic question and raising others
A new study has found galaxies with more neighbors tend to be larger than their counterparts that have a similar shape and mass, but reside in less dense environments. The team, which used a machine-learning algorithm to analyze millions of galaxies, reports that galaxies found in denser regions of the universe are as much as 25% larger than isolated galaxies. The findings resolve a long-standing debate among astrophysicists over the relationship between a galaxy's size and its environment, but also raise new questions about how galaxies form and evolve over billions of years.
Rare archaeological site reveals 'surprising' Neanderthal behaviour at Pyrenees foothills
An unchartered area in the foothills of the Southern Pyrenees in Spain is providing insights into a poorly known period of Neanderthal history, offering clues that could help archaeologists uncover the mystery of their downfall, according to new research.
Smart fabric converts body heat into electricity
Researchers have developed a smart fabric that can convert body heat and solar energy into electricity, potentially enabling continuous operation with no need for an external power source. Different sensors monitoring temperature, stress, and more can be integrated into the material.
How air-powered computers can prevent blood clots
A new, air-powered computer sets off alarms when certain medical devices fail. The invention is a more reliable and lower-cost way to help prevent blood clots and strokes -- all without electronic sensors.
Rocks from Mars' Jezero Crater, which likely predate life on Earth, contain signs of water
Scientists report that rock samples from Mars' Jezero Crater contain minerals that are typically formed in water. While the presence of organic matter is inconclusive, the rocks could be scientists' best chance at finding remnants of ancient Martian life.
Great Scott! Stonehenge's Altar Stone origins reveal advanced ancient Britain
New research has revealed Stonehenge's monumental six-ton Altar Stone, long believed to originate from Wales, actually hails from Scotland.
Decoding the world's largest animal genome
Scientists have sequenced the largest genome of all animals, the lungfish genome. Their data help to explain how the fish-ancestors of today's land vertebrates were able to conquer land.
Giant fossil seeds from Borneo record ancient plant migration
Ancient fossil beans about the size of modern limes, and among the largest seeds in the fossil record, may provide new insight into the evolution of today's diverse Southeast Asian and Australian rainforests, according to researchers who identified the plants.
Scientists condition crocodiles to avoid killer cane toads
Scientists have trialled a new way to protect freshwater crocodiles from deadly invasive cane toads spreading across northern Australia.