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Scientific American

Chimpanzee Consumption of Boozy Fruit May Illuminate Roots of Humanity’s Love of Alcohol

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Vaccines Are at Risk, Fired CDC Director Warns Senators

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Oldest Known Pachycephalosaur Fossil Discovered in Mongolia

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New Research Shows Gut Cells Communicate Directly with the Brain

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Climate Change Fuels Record Summer Heat, Killing Thousands

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Ozone Layer Recovery Continues under Montreal Protocol

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Weird ‘Time Crystals’ Are Made Visible at Last

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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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CDC Panel to Review Childhood Vaccines: What's at Stake

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Nixing Daylight Saving Time May Lower Risk of Obesity and Stroke

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Most Countries Are Reducing Deaths from Heart Disease, Cancer and Diabetes

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Mondays Really Are More Stressful on the Brain and Body

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Freaky ‘'Rubber Hand’ Illusion’ Works on Octopuses, Too

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COVID Deaths Decline, but Vaccine Access Remains Uneven in the U.S.

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Scientists Map Nightlife and Communication of NYC Rats to Help Urban Planning and Pest Control

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Measles Death Shows How Virus Can Hide in the Brain for Years

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Forensic Expert Explains How 3D Laser Scanning Could Reconstruct the Charlie Kirk Shooting

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Is Intermittent Fasting Helpful or Harmful?

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NASA’s JWST Hunts Dark Matter in Stunning Image of Bullet Cluster

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Daniel Yon Explains Why Your Brain Is a Brilliant Illusionist

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Polar Geoengineering Debate Rages as Climate Change Melts Ice

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Magic Mushroom Edibles Found to Contain No Psilocybin

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Frances Glessner Lee, the Mother of Modern Forensic Science, Made Crime Scene Dioramas

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Big Oil Companies Caused about 25 Percent of Heat Waves since 2000

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Early Experiments Show Fast-Acting Antidote Targets Carbon Monoxide Poisoning

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How to Send Your Name to the Moon with NASA’s Artemis II Mission

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Is There Life on Mars? This Rock May Hold the Answer

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Best-Yet Measurement of Merging Black Holes Confirms Einstein, Hawking and the ‘No Hair’ Theorem

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Autism Has No Single Cause, Research Shows

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Atlantic Hurricane Season Has Gone Quiet. Here’s Why

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