By Science News | Gennaro Tomma | 12/31/2025 8:00 AM
New footage shows orcas and dolphins coordinating hunts, hinting at interspecies teamwork to track and catch salmon off British Columbia. ... Read full Story
By Science News | Jake Buehler | 12/16/2025 9:00 AM
Cats were domesticated in North Africa, but spread to Europe only about 2,000 years ago. Earlier reports of “house” cats were wild cats. ... Read full Story
By Science News | Payal Dhar | 12/12/2025 11:00 AM
A mosquito proboscis repurposed as a 3-D printing nozzle can print filaments around 20 micrometers wide, half the width of a fine human hair. ... Read full Story
Finding that vampire bats along Peru’s coast carried H5N1 antibodies raises concerns that multiple bat species could become reservoirs for the virus. ... Read full Story
By Science News | Jake Buehler | 12/8/2025 3:00 PM
Lamniform sharks such as great whites and tiger sharks are famous for their size. The first such giants evolved 15 million years earlier than thought. ... Read full Story
The modern house cat reached China in the 8th century. Before that, another cat — the leopard cat — hunted the rodents in ancient Chinese settlements. ... Read full Story
By Science News | Jake Buehler | 11/25/2025 12:00 PM
Ancient collagen preserved in the bones of extinct Australian mammals is revealing their evolutionary relationships, leading to some surprises. ... Read full Story
By Science News | Maria Temming | 11/21/2025 8:00 AM
Simple chemistry could give the reindeer his famously bright snout. But physics would make it look different colors from the ground. ... Read full Story
By Science News | Elie Dolgin | 11/20/2025 7:01 PM
A machine learning analysis of wild lion audio reveals they have two roar types, not one. This insight might help detect where lions are declining. ... Read full Story
By Science News | Elie Dolgin | 11/17/2025 12:00 PM
Video from the Haíɫzaqv Nation Indigenous community shows a wolf hauling a crab trap ashore. Scientists are split on whether it counts as tool use. ... Read full Story
Newly mated parasitic queen ants invade colonies and spray their victims with a chemical irritant that provokes the workers to kill their mother. ... Read full Story
By Science News | Meghan Rosen | 11/14/2025 11:00 AM
Ancient RNA from Yuka, a 40,000-year-old woolly mammoth preserved in permafrost, can offer new biological insights into the Ice Age animal’s life. ... Read full Story
An analysis of mining plumes in the Pacific Ocean reveals they kick up particles sized similarly to the more nutritious tidbits that plankton eat. ... 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.