All stories — Page 23

31 Dec 2025

Single gene switch helps butterflies copy wing patterns

New research shows how one genetic switch lets female swallowtail butterflies copy the wing patterns of toxic species to avoid predators. The study used genomic sequencing and CRISPR and was published in PNAS.

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31 Dec 2025

Adding antibodies could make flu vaccines cut spread

New research shows adding certain infection-made antibodies to flu vaccines may lower how much infected people spread the virus. The study followed households using tests and models and was published in Nature Communications.

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30 Dec 2025

Microbes help tell how old termite pellets are

A University of California, Riverside study found that microbes in termite pellets change after exposure to air. Measuring bacterial DNA over time can distinguish fresh from old pellets and could enable a quick on-site test.

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30 Dec 2025

Social support in childhood and later survival

A study finds that steady social support in childhood can lower the risk of early death for young people who face serious family or community problems. Researchers link low support to worse mental health and risky behaviour.

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30 Dec 2025

Epigenetic differences in Andean highlanders

New research compares DNA methylation in Kichwa highlanders and Ashaninka lowlanders and finds epigenetic differences in genes linked to blood vessels and muscle, suggesting a role in adaptation to high altitude.

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30 Dec 2025

Hand numbness: carpal and cubital tunnel explained

Hand numbness and tingling can come from different problems. Correct diagnosis matters because carpal tunnel and cubital tunnel affect different nerves and need different treatments. Seek care if symptoms last or cause weakness.

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30 Dec 2025

Jaw membrane in ancient Thrinaxodon may be an early eardrum

Researchers used CT scans and engineering simulations on a Thrinaxodon fossil. Their models show a membrane in the jaw could work as an eardrum, pushing the origin of sensitive mammal hearing back by nearly 50 million years.

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30 Dec 2025

Report: Fear from Immigration Enforcement in High Schools

A national report says federal immigration enforcement has created fear on many public high school campuses. The study describes students missing school, bullying, safety concerns and steps school leaders are taking to protect families.

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30 Dec 2025

Caribbean year of tensions, culture and climate

The Caribbean saw political tensions between the United States and Venezuela, major cultural wins and environmental challenges. Hurricanes and renewable energy plans shaped the year, while sport successes and political debates marked regional headlines.

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30 Dec 2025

Telemedicine now delivers a growing share of PrEP in the US

A national analysis finds that nearly 20% of US PrEP users received medication by telemedicine in 2024, a large rise from under 1% in 2019. The study used national prescription counts and data from a telePrEP provider.

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30 Dec 2025

3D model of Rano Raraku reveals moai production

Researchers made the first digital 3D model of Rano Raraku quarry on Rapa Nui (Easter Island). The model records nearly 1,000 moai and helps researchers and the local community with conservation and heritage planning.

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30 Dec 2025

Salt and large African herbivores

A study with the University of Zurich shows many large wild herbivores in Africa lack enough sodium. Researchers used maps, animal data and fecal tests to see where animals get salt and why they travel for it.

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