Science News

Latest science news, discoveries and scientific developments.

Alzheimer’s may leave a mark on the brain long before plaques appear
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Alzheimer’s may leave a mark on the brain long before plaques appear

Brain changes associated with Alzheimer’s may begin at least seven years before amyloid plaques become detectable with current PET scans. Researchers uncovered the signal by tracking healthy older adults with repeated brain imaging over nearly 20 years. The discovery could help scientists identify Alzheimer’s earlier and suggests that important disease processes may start before visible plaque buildup.

📅 2026-09-02 13:33:57    •    ScienceDaily
A coffee-table-size scorpion roamed Earth before forests existed
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A coffee-table-size scorpion roamed Earth before forests existed

A meter-long scorpion with massive pincers stalked ancient Britain 415 million years ago, long before forests and the better-known age of giant insects. Its surprising size and possible semi-aquatic lifestyle could reshape ideas about how early arthropods became giants.

📅 2026-09-02 13:23:16    •    ScienceDaily
Too much coffee may weaken bones, study finds
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Too much coffee may weaken bones, study finds

Following nearly 10,000 older women for 10 years, researchers found that tea drinking was associated with slightly higher hip bone density. Moderate coffee consumption did not appear harmful, but drinking more than five cups a day was linked to lower bone density. The findings suggest tea may offer a small bone-health boost, while excessive coffee could carry some drawbacks.

📅 2026-09-02 06:04:39    •    ScienceDaily
A search for one exotic particle uncovered two strange new structures
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A search for one exotic particle uncovered two strange new structures

A search for one mysterious particle unexpectedly revealed evidence for two different structures that may belong to the bizarre family of exotic subatomic particles known as XYZ states. The findings could help physicists uncover new ways that quarks and gluons combine to create matter.

📅 2026-09-02 05:28:30    •    ScienceDaily
Earth may have lost the Sun’s protective shield millions of years ago
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Earth may have lost the Sun’s protective shield millions of years ago

NASA-funded studies suggest Earth’s climate has been influenced by both the Sun’s travels through dense regions of the Milky Way and the violent superflares of its youth. Those events may help explain ancient ice ages as well as how early Earth stayed warm enough for liquid water when the Sun was much dimmer.

📅 2026-09-02 04:25:48    •    ScienceDaily
Obesity leaves a lasting memory in immune cells
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Obesity leaves a lasting memory in immune cells

Obesity appears to leave a molecular imprint on key immune cells that may persist for 5 to 10 years after weight loss. This long-lasting “obesity memory” could help explain why some obesity-related health risks remain elevated even after body weight returns to normal.

📅 2026-09-02 02:30:28    •    ScienceDaily
Have we finally found dark matter?
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Have we finally found dark matter?

The world’s biggest dark matter search saw a particle it cannot explain

📅 2026-09-01 14:00:00    •    Scientific American
Mindfulness may lower blood pressure in just 8 weeks
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Mindfulness may lower blood pressure in just 8 weeks

Mindfulness, gratitude, and optimism training may improve blood pressure, inflammation, and other heart-health measures within just eight to 12 weeks. The strongest programs paired daily practice with regular reinforcement, suggesting that improving psychological well-being could become another tool for protecting cardiovascular health.

📅 2026-09-01 12:58:41    •    ScienceDaily