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Sam's News — science — 2026-08-07

TL;DR

Science

Scientists discover Earth's molten iron core unexpectedly reversed direction beneath Pacific

Satellite data reveals Earth's molten iron core abruptly reversed direction beneath the Pacific, raising questions about planetary magnetic field dynamics.

Sources: ScienceDaily RSS

Neutrino detectors reveal unprecedented view of radioactive elements powering Earth's tectonic heat engine

A global constellation of neutrino detectors is mapping radioactive elements in Earth's mantle that generate the planet's geothermal energy.

Sources: Quanta Magazine RSS

Honduras biodiversity review confirms 227 native mammal species after eight-year effort

An international research project verified 227 native mammal species in Honduras, the most comprehensive mammal census since 1998.

Sources: Phys.org RSS

Physicists trace solar outbursts behind historic Mother's Day 2024 geomagnetic storms

Researchers identified the solar sources of May 2024's geomagnetic storms, the most powerful in two decades with record auroral displays.

Sources: Phys.org RSS

Ancient Ötzi the Iceman hosts mix of ancient and modern microorganisms on 5,300-year-old body

Scientists separated modern microbes colonizing Ötzi's mummified body from his original 5,300-year-old gut bacteria, revealing ancient microbial traces.

Sources: ScienceDaily RSS

Scientists rediscover lost 79-foot Megalodon fossils, confirm giant shark size and longevity

Previously thought-destroyed Megalodon vertebrae found on a museum shelf confirm the extinct shark could exceed 24 meters and live nearly a century.

Sources: ScienceDaily RSS

Health

Scientists discover hidden brain shift beginning around age 50 linked to Alzheimer's disease

Research shows that around age 50, the brain's memory center loses longtime immune cells and replaces them with inflammatory ones, potentially explaining Alzheimer's onset.

Sources: ScienceDaily RSS, ScienceDaily — Health RSS

Blocking glycine transporter SLC6A20 reverses autism symptoms in adult mice

Blocking the glycine transporter SLC6A20 restored brain signaling and improved social, communication, and repetitive behaviors in autism-related mouse models and human organoids.

Sources: ScienceDaily RSS, ScienceDaily — Health RSS

Wearable ultrasound patch accelerates REM sleep onset by 43 minutes without drugs or surgery

A wearable ultrasound patch shortened REM sleep onset by 43 minutes and extended it by 16 minutes, improving stress regulation without medication.

Sources: ScienceDaily RSS, ScienceDaily — Health RSS

Researchers identified C/EBPγ transcription factor as simultaneously promoting epithelial-mesenchymal transition and DNA repair in lung cancer cells.

Sources: Phys.org RSS