Europa Clipper: Millions of miles down, instruments deploying

NASA's Europa Clipper, which launched Oct. 14 on a journey to Jupiter's moon Europa, is already 13 million miles (20 million kilometers) from Earth. Two science instruments have deployed hardware that will remain at attention, ...

Developing nations slam 'paltry' $300 bn climate deal

The world approved a bitterly negotiated climate deal Sunday but poorer nations most at the mercy of worsening disasters dismissed a $300 billion a year pledge from wealthy historic polluters as insultingly low.

Axion dark matter may make spacetime ring

Dark matter made out of axions may have the power to make space-time ring like a bell, but only if it is able to steal energy from black holes, according to new research.

Engineers refine lipid nanoparticles for better mRNA therapies

Penn Engineers have cooked up a new way to improve mRNA delivery, developing an optimal "recipe" for ionizable lipids—key ingredients in lipid nanoparticles (LNPs), the molecules behind the COVID-19 vaccines and other innovative ...

Mounting economic costs of India's killer smog

Noxious smog smothering the plains of north India is not only choking the lungs of residents and killing millions, but also slowing the country's economic growth.

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