An mRNA vaccine protected mice against the deadly gut bacteria C. difficile

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Clostridioides difficile illustration

Clostridioides difficile is an extremely nasty intestinal bug, with few effective treatments and no approved vaccines. But the same technology that enabled the first COVID-19 vaccines has shown early promise in mouse experiments against the deadly infection, which kills 30,000 people in the United States each year. An mRNA vaccine designed to target C. difficile … Ler mais

Storms ignite a ‘boiling pot’ of gamma rays

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A plane flies over the tops of thunderclouds that are glowing purple.

Above the cloud tops, storms blow with a complex and frenetic light show of high-energy radiation. A view from a refurbished spy plane flying 20 kilometers up revealed storms glowing and flickering in gamma rays, high-energy light invisible to the eye. Ten flybys of the aircraft, NASA’s ER-2 aircraft, captured the flickering of gamma-ray bursts … Ler mais