Scientists identify new spinosaurid, Moderna flu shot back on track, universal inhaled vaccine shows promise

image via New Scientist

February 23, 2026, 11:00 AM

• •FDA reversed decision to review Moderna's mRNA flu vaccine after initially rejecting it.
• •Researchers developed an inhaled vaccine that stimulates both the innate and adaptive immune systems, showing promise in mice.
• •Study links long-term exposure to fine particulate air pollution (PM2.5) with an increased risk of Alzheimer's.
• •Artemis II mission's wet dress rehearsal was successful with no hydrogen leaks.
• •A new species of spinosaurid, Spinosaurus mirabilis, was discovered in the Niger desert, challenging previous habitat theories.

This week's science news includes a surprising FDA reversal on Moderna's mRNA flu vaccine after initial rejection, alongside promising developments in an inhaled universal vaccine that targets both the innate and adaptive immune systems. Research also suggests a link between long-term exposure to air pollution and an increased risk of Alzheimer's disease. Additionally, the Artemis II moon mission completed a successful wet dress rehearsal, while paleontologists unveiled a new spinosaurid species, Spinosaurus mirabilis, found in the Niger desert, challenging previous theories about their habitat. This discovery expands our understanding of these creatures.

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