Uncategorized
- Health & Medicine
A popular sunscreen ingredient can finally be sold in the United States
The FDA will allow bemotrizinol in sunscreen. The chemical is long-lasting and defends against solar radiation that ages skin.
- Chemistry
A new method could spot fentanyl variants no one has cataloged yet
Researchers used machine learning to help predict chemical signatures for over 1 billion possible fentanyls, including variants never seen before.
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Crossword: Power play
Solve the crossword from our July 2026 issue, in which we raise our solving skills to the next level.
- Physics
Here’s what would happen if you tried to break a photon in half
A mathematical model shows that attempting to sever a fundamental particle of light could conjure new ones out of thin air.
