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Science

Weird ‘Time Crystals’ Are Made Visible at Last

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2025 summer was Spain's warmest on record: Weather agency

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A spacecraft could explore 3I/ATLAS to learn more about 'cosmic noon'

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From beer to useful fats and medicines

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When politics drive entrepreneurial innovation, digital payments see impact

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New images reveal unexpected polarization flips near M87's supermassive black hole

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Economic hardship linked to higher risk of partner violence against women

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Researchers develop data-guided simulations for more accurate modeling of random systems

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Partial solar eclipse at the bottom of the world closes out the year's sun and moon spectacles

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Study shows number of childless women in the US continues to rise

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Evidence of cosmic impact discovered at classic Clovis archaeological sites

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Chameleons shine in black for better camouflage

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Green and brown persist—study reveals the role of color in driving evolution in frogs

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Shark chomps on seal close to Massachusetts beaches

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Study calculates value of Virginia coastal wetlands at $90 million

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Humans get as attached to horses as they do to pets

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Santa Monica's waves have turned a bright pink: How can the dye job improve water quality?

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A new book explores the link between film giant Kodak and the atomic bomb

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Earth's history written in the stars: Zircon crystals reveal galactic influence

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If quantum computing is answering unknowable questions, how do we know they're right?

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Strange signals at absolute zero hint at dark matter’s secrets

Can vertical farms really feed the UK sustainably? New study weighs climate costs and benefits

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Making atoms self-magnify reveals their quantum wave functions

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Good immune health may come at the expense of chronic inflammation

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The Quiet Demise of Breakthrough Starshot, a Billionaire’s Interstellar Mission to Alpha Centauri

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The Problem with Billionaire Science

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Science Crossword: A Little Light Launch

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Readers Respond to the May 2025 Issue

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Poem: ‘Love Letter from Photograph 51’

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October 2025: Science History from 50, 100 and 150 Years Ago

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New Hope in Alzheimer’s Research: A Special Report

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New Alzheimer’s Blood Tests Promise Early Detection but No Clear Path Forward

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Math Puzzle: Find the Unknot

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How Three Fusion Reactor Designs Could Power Tomorrow

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How Racial Discrimination and Pollution Increase Alzheimer’s Risk

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How Climate Change Is Increasing Landslide Risk Worldwide

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How Birds Began Migrating to the Arctic to Breed

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Fast Fashion Is a Bad Look for the Environment

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Dead Trees Hide a Complex World Crucial to Forest Ecology and Climate

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Controversial New Alzheimer’s Treatments Gain Ground despite Serious Side Effects

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Contributors to Scientific American’s October 2025 Issue

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Can Dogs, Cats and Other Pets Truly Improve Your Health?

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Can Diet and Exercise Prevent Alzheimer’s Disease? What the Research Says

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As Memory-Care Facilities Close, America Faces a Crisis in Alzheimer’s Care

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A New Generation of Alzheimer’s Treatments, Explained in Graphics

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These Aren’t Your Pharoah’s Mummies

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The Dinos’ Demise Gave Rivers Their Shape

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Long Lives Helped Early Humans Thrive

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Why so many young kids with ADHD are getting the wrong treatment

New drug could be first to stop deadly fatty liver disease