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Daytime highs often get the headlines, but overnight temperatures are rising twice as fast in the U.S. And that nighttime heat is losing us sleep. 🧪 By @jackiefmogensen.bsky.social. Graphics by our excellent graphics intern Sani Sharma.

3 charts show how extreme heat is costing us hours of lost sleep

The U.S. has been pummeled with heat waves this summer. Here’s how hot overnight temperatures can get in the way of a good night’s rest—in 3 charts

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Marcel Proust so famously wrote of the rush of memories invoked by smelling and eating a madeleine cake that the phenomenon of scent-induced nostalgia became known as "Proust's madeleine." Now neuroscientists have figured out how it works in the brain.

Neuroscientists pinpoint how smells bring back childhood memories

Smell can bring back vivid childhood memories—the so-called “Proust’s madeleine” phenomenon—and neuroscientists now think they know why

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ICYMI, this is the best story you're gonna find about the current status of the search for life on Mars, wrapped up inside a 50th-anniversary retrospective of NASA's epochal Viking missions. And it's only on @sciam.bsky.social.

Lee Billings@leebillings.bsky.social · last wk.

Now on @sciam.bsky.social: Has NASA already found life on Mars? A controversial new assessment of half-century-old data suggests the space agency’s life-hunting Mars lander Viking 1 found exactly what it was looking for. By @nadiadrake.bsky.social. www.scientificamerican.com/article/has-...

Now on @sciam.bsky.social: Has NASA already found life on Mars? A controversial new assessment of half-century-old data suggests the space agency’s life-hunting Mars lander Viking 1 found exactly what it was looking for. By @nadiadrake.bsky.social. www.scientificamerican.com/article/has-...

Has NASA already found life on Mars?

In searches for past and present Martian life, some scientists say we’ve been too cautious to see what’s right in front of us

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Now on @sciam.bsky.social: The Fields Medals—math's most prestigious prizes, often compared to the Nobels—have 4 new honorees, for work ranging from the theory of knots to the motion of fluids. Congrats to Hong Wang, Yu Deng, John Pardon & Jacob Tsimerman! www.scientificamerican.com/article/2026...

Math’s latest Fields Medalists are the most diverse group yet

The 2026 Fields Medals recognize breakthroughs in the math of messy fluids, tangled knots, spinning pencils, and more

scientificamerican.com