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Scientific American

Which problems will quantum computers solve—and when?

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The Riemann hypothesis is a million-dollar math problem hardly anyone is trying to solve

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Science crossword: At the same time

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Readers respond to the February 2026 issue

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Quantum computing is reaching its make-or-break moment

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Poem: ‘Horseshoe Crab’

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New ways to keep from losing muscle on Ozempic

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New high‑resolution map transforms what we know about Roman roads and the Roman Empire

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NASA dreams of a nuclear power plant on the moon. Here’s why

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June 2026: Science history from 50, 100 and 150 years ago

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How commercial satellites are changing modern warfare

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Helion Energy is building a fusion power plant. Can its technology deliver?

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A real quantum leap

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A field guide to quantum computer qubits

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A lamp flickering on and off inspires the math mystery of Thomson’s lamp

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Ebola outbreak triggers U.S. ban on travelers from three African nations

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How scientists developed a hantavirus PCR test in a weekend

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Hidden copy of the oldest known poem in the English language leaves researchers ‘speechless’

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The world is less prepared for a pandemic than before COVID. Here’s why

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See a Lincoln Memorial-sized asteroid pass within just 56,000 miles of Earth today

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Trump administration ousts top NIH infectious disease leaders

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The programmer whose code underpins the Internet

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How marijuana rewires the teenage brain

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Hantavirus cruise ship, PCOS name change, a fish that hides in another animal’s ‘butthole’

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Did Homo erectus and Denisovans mate? Tooth proteins hint at ancient trysts

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This small rodent is at the center of theories about the hantavirus outbreak

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These ants navigate with a compass tuned to the moon

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NASA reveals new clues to 2027’s Artemis III, the final test mission before a moon landing

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Scientists catalog the ‘fractal dimensions’ of more than 130,000 islands

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Hantavirus can persist in semen for years, but that doesn’t mean it remains contagious

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A real Mr. Snuffleupagus? Meet the ocean’s strangest new fish species

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This startup wants to make drugs in orbit. If it succeeds, it could transform the space economy

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How to arm yourself against hantavirus misinformation

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Can plants have consciousness? The film Silent Friend reimagines the science

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Asking AI to explain your medical results? What doctors want you to know

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Microbe ‘cities’ may solve a key ocean mystery

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Are astronomers ignoring some of the cosmos?

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Why Black women are at greater risk for fibroids and endometrial cancer

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To celebrate Endangered Species Day, meet the scaly-foot snail, the most metal animal in the world

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U.S. Supreme Court allows mifepristone by mail—for now

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There’s an 82 percent chance El Niño will ‘emerge soon,’ NWS says

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‘Golden rule’ in abstract art just discovered by mathematicians

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Implantable ‘living materials’ that deliver drugs on demand could help fight infections

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Doubts grow over theory that bird-watchers’ trip to Argentine landfill sparked hantavirus outbreak

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NASA’s Psyche mission is snapping photos of Mars on its way to an asteroid

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Can helium-3 create a ‘gold rush’ on the moon?

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The war in Iran is supercharging an ecological crisis in the Persian Gulf

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Deep-Earth diamonds reveal trove of never-before-seen minerals

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Depression scales may not work the same for highly intelligent people

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2026 FIFA World Cup players and fans at risk of extreme heat, climate scientists warn

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