By Science News | Susan Milius | 3/23/2026 9:00 AM
Scientists tracked mantis strike force from youth to adulthood, showing females eventually hit far harder than males. Why is a mystery. ... Read full Story
Nearly one third of sharks studied near the Bahamas’ Eleuthera Island were found to have caffeine, painkillers and other drugs in their bloodstreams. ... Read full Story
By Science News | Elie Dolgin | 3/11/2026 12:00 PM
The Amazon molly reproduces without sex. A genomic copy-and-paste trick called gene conversion may explain how it avoids evolutionary meltdown. ... Read full Story
Submerged bees breathe and use strategies that don’t require oxygen, lab tests show. In nature, that trick could help the bees survive floods. ... Read full Story
As koalas in southern Australia have grown from a few hundred to almost half a million, the marsupials show signs of regaining lost genetic variation. ... Read full Story
The wood-feeding cockroach’s cannibalistic love bites lead to a lasting bond. Afterward, the pair prefer each other over all other roaches. ... Read full Story
Suitable milkweed habitat in Mexico may shift south, fracturing existing migration routes and possibly pushing some butterflies to stay put. ... Read full Story
By Science News | Jake Buehler | 2/25/2026 1:00 AM
Finding a caterpillar with rhythm was “mind-blowing,” suggesting it might be a more widespread part of animal communication than thought. ... Read full Story
Fecal analyses and necropsies suggest a fire-footed rope squirrel was the source of a 2023 mpox outbreak among sooty mangabeys in Côte d’Ivoire. ... Read full Story
By Science News | Emily Conover | 2/24/2026 11:00 AM
Rufus net-casting spiders can tune the stiffness and elasticity of their webs thanks to loops of silk, scanning electron microscope images reveal. ... Read full Story
By Science News | Jake Buehler | 2/18/2026 2:00 PM
Research reveals more short-snouted dogs besides pugs and bulldogs that struggle with breathing. Pekingese and Japanese Chins topped the study's list. ... Read full Story
Merriam-Webster's Word of the Day for May 4, 2026 is:
scrupulous \SKROO-pyuh-lus\ adjective
Scrupulous describes someone who is very careful about doing something correctly, or something marked by such carefulness. Scrupulous can also describe someone who is careful about doing what is honest and morally right.
// She was always scrupulous about her work.
// Being an editor requires scrupulous attention to detail.
// Less scrupulous companies find ways to evade the law.
“Scrupulous directors make sure that the sound of their movies is grossly efficient, so that the dramatic meaning of a scene is apparent even in the worst theatre or home system in the country …” — David Denby, The New Yorker, 9 Mar. 2026
Did you know?
People described as scrupulous might feel discomfort if their work is not executed with a sharp attention to detail. Such discomfort might present itself as a nagging feeling, much as a sharp pebble in a shoe might nag a walker intent on getting somewhere. And we are getting somewhere. The origin of scrupulous is founded in just such a pebble. Scrupulous and its close relative scruple (“a feeling that prevents you from doing something that you think is wrong”) both come from the Latin noun scrupulus, “a small sharp stone,” the diminutive of scrupus, “a sharp stone.” Scrupus has a metaphorical meaning too: “a source of anxiety or uneasiness.” When the adjective scrupulous entered the English language in the 15th century, it described someone careful about preserving their moral integrity, but it now is also commonly used for someone who is careful in how they execute tasks.