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Scientific American

Mathematicians sign declaration to rein in AI use

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Questioning everything

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Trump's psychedelics executive order could accelerate new treatments—even for children

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Hyperbaric oxygen therapy is being explored as a long COVID treatment. Here’s what the research shows

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Oldest cave art in the U.K. discovered inside Welsh cave

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How the war in Iran is affecting your dinner plate

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Andrew Scott talks about World War II, D-Day and weather forecasting for his new film Pressure

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Join the Scientific American Summer Reading Challenge

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China launches rival to SpaceX Falcon 9 with zero warning

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Hurricane season explained—and what to expect in 2026

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Scientists are racing to stop a type of Ebola we have no vaccine for

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These exotic particles could break physics

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Top U.S. science funder slows research grants to universities

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New protein-folding AI vastly expands on Alphafold's efforts

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NASA’s Hubble captures gorgeous new photo of a spiral galaxy as it wanders through the Virgo Cluster

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How the success of D-Day hinged on a weather forecast

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Why high-bandwidth memory is a bottleneck for AI chips

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Retatrutide results spark questions about how rapid weight loss affects the body

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Blue Origin’s New Glenn rocket explodes in massive fireball, imperiling NASA moon missions

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Europe’s deadly spring heat wave is obliterating temperature records

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How big can a galaxy get?

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How smartphones and AI are reshaping our bodies and minds

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White House proposes new rules giving political appointees final approval on research grants

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A new study says homing pigeon livers act like compasses. Other experts aren’t so sure

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San Antonio Spurs star ‘Wemby’ is rocking the NBA playoffs. Science can help explain why

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Back-to-back chemical accidents raise alarm over EPA push to reduce oversight

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Kamala Sohonie: The biochemist who wanted to feed a nation

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Are the roots of consciousness hidden in the ancient deep brain?

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Trump plan to give start-ups plutonium harvested from Cold War–era nuclear weapons is risky, experts say

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The ‘age of gravitational astronomy’ is here

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A quantum computing system’s perfect randomness could keep your secrets safe

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The secret to immortality might be a sea cucumber

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‘Universal’ aging clocks offer new clues to longevity

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NASA’s Jared Isaacman unveiled the first moon base rovers and landers

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Gigantic ‘little red dot’ threatens to upend cosmic history

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Tiny quantum computers could help create giant telescopes

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This sci-fi novel asks—can what you will never know kill you?

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Iran threats expose the aging fleet that repairs undersea Internet cables

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How doctors will handle abortions if mifepristone telehealth access is banned

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Are humans really selfish? Rewriting the rules of civilization

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Anthropic asks religious thinkers to help shape Claude as pope warns about AI

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How the mathematician Gödel proved that not everything can be proven

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Why a ‘heat dome’ over Europe is shattering temperature records right now

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China just launched a bunch of fake human embryos into space on a new research mission

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A toothless, beaked, bipedal crocodile cousin roamed Earth 200 million years ago

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How mathematicians use Minecraft to calculate pi

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Experts explain how sunscreen really works—and why better ones may be coming soon

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Tiny alienlike blue octopus discovered lurking off the Galápagos Islands

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Ocean census reveals more than 1,100 new species

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The universe could have 18 possible shapes

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