A bizarre, ultra-light planet is cloaked in such a thick haze that even JWST can’t reveal its composition. Its unusual size and orbit are forcing scientists to rethink how planets form.

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The duo, playing inept spies, arrives at a Doctors Without Borders camp, and all it takes for them to convince the people there that they belong is to call everyone “Doctor” over and over and over ...

A surprising FDA reversal on Moderna’s mRNA flu vaccine, early promise from a universal inhaled vaccine, and a desert fossil find that is reshaping spinosaurid history.