Other animals receive estrogens, the primary female sex hormones, or progestins, semiandrogenic agents that shut down a female’s estrus cycle. Farmers fatten up two-thirds of these animals by using hormones. In plant sciences, Mark Chonofsky of Lexington, Mass., won for his research on Taxaceae, the plant family that includes the species from which the cancer drug Taxol is derived. Adiseshan won best of in the animal sciences category, Schwob in behavioral and social sciences, Boynton in environmental sciences, Larson in mathematical sciences and Shah in chemistry. Her analysis revealed that the bees and nematodes had a tight-knit relationship throughout evolutionary history, diverging into new species at the same time. Those prizes were part of nearly $4 million in scholarships, tuition grants and scientific trips and equipment awarded at the world’s largest high-school science competition.
Ancient southern Africans took genetic evolution in a new direction
- Neuroscience and Biobehavioral Reviews.
- Bruce Bower has written about the behavioral sciences for Science News since 1984.
- The mitochondrial DNA of the Goyet and Russian dogs belongs to a maternal lineage that didn’t leave any modern descendants, researchers reported in Science in 2013.
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- That’s the task of paleontologist Mietje Germonpré of the Royal Belgian Institute of Natural Sciences in Brussels, who studies dog domestication.
- At launch, OpenAI included more than 3 million GPTs created by GPT Builder users in the GPT Store.
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- Calmer domesticated animals might have neural crest cells that move or work differently than the cells in more fearful wild animals.
- The pups could one day be introduced to the wild population to increase its genetic diversity, James says.
- It is credited with accelerating the AI boom, an ongoing period marked by rapid investment and public attention toward the field of artificial intelligence (AI).
- If scientists analyzed that cheek sample, they’d see hundreds of millions of DNA letters, like long paper streamers.
- The researchers modified a coat color gene called CORIN, for example, which gave the pups their light fur.
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Dire wolves may be more closely related to gray wolves than scientists once thought
“I think the concept of conserving species that are critically endangered is fantastic,” she says. The pups could one day be introduced to the wild population to increase its genetic diversity, James says. Colossal identified a group of wolves on the Gulf Coast of Texas and Louisiana that genetically match red wolves, though they’re not officially recognized as such.
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For instance, recent studies hint that picking up a mouse by its tail casts a pall on the animal’s day, and that an unexpected sugar treat may improve a bee’s mood. Scientists studying animal behavior and animal welfare are making important strides in understanding how the creatures we share our planet with experience the world. When we see them play in captivity, it isn’t necessarily a good sign, says Martine Hausberger, an animal scientist at CNRS at the University of Rennes in France. But in the wild, adult horses rarely play.
This ancient Siberian ice mummy had a talented tattooist
She has bachelor's degrees in physics and English, and a master's in science writing. Previously the staff writer for physical sciences at Science News, Maria Temming is the assistant managing editor at Science News Explores. The animal kingdom appears to have a new heavyweight champion. High-speed video reveals that youngsters can snap their claws up to about 600 kilometers per second per second — an acceleration 20 times as fast as their elders achieve. Because the newfound black hole boasts about the same heft as its surrounding galaxy, researchers think the black hole could have formed only through the collapse of a massive gas cloud.
“I certainly wouldn’t want to make the argument that at the Botai time you’ve got anything like modern domesticated horses,” he says. Bonds between humans and their animal companions may be more important than rigid biological criteria, Larson and other researchers argue. Dogs appear to have been the first species domesticated by humans, followed by many others in Asia and the Middle East. By these criteria, some people argue that cats — popular pets worldwide — are not fully domesticated.
For most of the last two millennia, Western thinkers roundly rejected the notion that animals have the capacity for feelings. By contrast, the animals that lived in solo stalls with little contact with other horses had more gamma brain waves, the fastest of all brain waves. EEG has been used in animals in veterinary clinics and in laboratory studies, but Hausberger wanted to bring the tool to the animals’ home turf. In people, EEG can help assess sleep patterns or diagnose conditions such as epilepsy, stroke or head injury, and researchers now think certain types of brain waves can indicate depression. Researchers can make scientific inferences about how an animal feels based on observable clues from physiology or behavior, she says. Yet studying what animals experience is a challenge, says Charlotte Burn, an animal welfare scientist at the Royal Veterinary College in Hatfield, England, and an author of the 2021 review.
Stanford researchers reported that GPT-4 "passes a rigorous Turing test, diverging from average human behavior chiefly to be more cooperative." Their leaders emphasized their earlier caution regarding public deployment was due to the trust the public places in Google Search. ChatGPT gained one million users in five days and 100 million in two months, becoming the fastest-growing internet application in history. Kelsey Piper of Vox wrote that "ChatGPT is the general public's first hands-on introduction to how powerful modern AI has gotten" and that ChatGPT is "smart enough to be useful despite its flaws".
But it can be tough to get a clear read of an animal’s genome from ancient DNA. Colossal scientists extracted DNA from a 13,000-year-old fossilized tooth from Ohio and a 72,000-year-old inner ear bone fossil from Idaho. Science News spoke with half a dozen scientists to learn more about Colossal’s recent work, the implications for conservation and what’s next for the new pups. Other Colossal research on the red wolf shows how new tools might aid last-ditch efforts to save species that are critically endangered. “At the moment, I think they’re creating interesting zoo-like novelties,” says Paul Wilson, a wildlife geneticist at Trent University Ontario in Peterborough.
