New dino, vaccine shake-ups, dirty air risks

新型恐龙、疫苗动荡、污浊空气风险

Science Quickly

2026-02-23

11 分钟
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In this Science Quickly news roundup, we look at the Food and Drug Administration’s surprising change of heart on reviewing Moderna’s mRNA flu shot, a promising new inhaled vaccine that could fight multiple respiratory bugs at once and fresh research that ties air pollution to higher Alzheimer’s risk. We also check in on the latest Artemis II “wet dress rehearsal” and meet a newly discovered spinosaurid dinosaur that turns old assumptions about such dinos’ habitat on their head. Recommended Reading: FDA agrees to review Moderna mRNA flu vaccine in dramatic reversal Newly discovered horned dinosaur was like a unicorn from hell NASA just passed a major milestone on its mission to return humans to the moon NASA reveals new problem with Artemis II rocket, further delaying launch E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover! Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter. Science Quickly is produced by Kendra Pierre-Louis, Fonda Mwangi, Sushmita Pathak and Jeff DelViscio. This episode was edited by Alex Sugiura, with fact-checking by Shayna Posses and Aaron Shattuck. Our theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices
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  • For Scientific American Science Quickly, I'm Kendra Peer Lewis in for Rachel Feldman.

  • You're listening to our Weekly Science News Roundup.

  • Let's start off with a vaccine 180.

  • In a sudden turn of events last Wednesday, the U.S.

  • Food and Drug Administration agreed to review Moderna's new mRNA flu vaccine,

  • according to the company.

  • The announcement came roughly a week after Moderna revealed that the FDA had rejected its application.

  • The company said the agency originally called the plan for the vaccine's phase-through trials acceptable,

  • but its position changed after top FDA official,

  • Vinay Prasad, overruled the agency's reviewers according to stat.

  • Moderna's press released about the rejection,

  • so the FDA had declared the company's study not adequate and well-controlled.

  • Angela Rasmussen, a virologist at the University of Saskatchewan, told Sidrap News that, quote,

  • the trial design they used is essentially the trial design that every single flu vaccine has used.

  • In the aftermath of their original refusal,

  • Bloomberg reported that Moderna's chief executive officer,

  • Stefan Bancel, deemed the agency unpredictable.

  • He said that if the FDA continues to behave this way, it, quote, threatens U.S.

  • leadership in innovative medicines.

  • Speaking of innovative medicines,