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Myelin Sheath: How It Protects Axons and Speeds Signals
The myelin sheath forms a multilayered fatty coating around nerve axons, enabling fast electrical impulses through saltatory conduction while providing metabolic support and physical protection.
Ancient Solar Eclipse in China Refines Past Earth Rotation
Archaeological corrections to the coordinates of ancient Qufu allowed astronomers to model the 709 BCE total solar eclipse, yielding new measurements of Earth's rotational deceleration and solar corona activity.
CDC Deputy Director Jennifer Shuford Resigns After Four Months
Dr. Jennifer Shuford has resigned as CDC deputy director and chief medical officer after four months, marking another departure from federal health leadership.
Mosquitoes Spread West Nile Virus and Dengue to New US Regions
Expanding suburban neighborhoods and warming seasonal temperatures are helping disease-carrying mosquitoes colonize new territory across the United States. Artificial backyard water containers and longer warm seasons support species like Aedes aegypti and Culex mosquitoes, accelerating the transmission of West Nile virus and dengue.
Hera Spacecraft Separates Didymos and Dimorphos in New Image
ESA's Hera spacecraft has resolved Didymos and Dimorphos as two distinct points of light, marking a key milestone ahead of its 2026 asteroid rendezvous.
Polymerase Chain Reaction: How DNA Thermal Cycling Works
Polymerase chain reaction amplifies specific DNA targets through automated heating and cooling cycles, transforming diagnostics, molecular biology, and forensic science.
Nanotyrannus Skeleton Jodi Sells for $47.3 Million at Sotheby’s
The 67-million-year-old Nanotyrannus skeleton known as Jodi fetched $47.3 million at Sotheby's in New York, reigniting debate over the commercial fossil trade.
Autumn Gardening Sustains Overwintering Wildlife in Britain
Leaving leaf litter, fallen twigs, and standing flower stems in residential gardens provides food and microclimates that shelter overwintering wildlife during cold British winters.
Himera and GomSpace Begin Orbit Tests for Obria Nano
Ukrainian defense startup Himera and Danish satellite manufacturer GomSpace are testing the Obria Nano satellite in orbit to prepare a sovereign communications network.
Northern Ireland Nature Recovery Strategy Sets 2032 Targets
Northern Ireland has unveiled its Nature Recovery Strategy to 2032, setting scientific frameworks to halt biodiversity decline and restore damaged habitats.