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Why Aren’t All Comets as Bright as Comet Lemmon?

Bearded Vulture Nests Hold 600 Years of Human Artifacts in Spanish Caves

The Dangerous Data Gap in Pregnancy Drug Research

Hurricane Melissa Could Drop Two Feet of Rain on Jamaica

Duck-Billed Dinosaur ‘Mummies’ Are Clay Molds Formed by Microbes, Scientists Say

The Rise of AI ‘Chatfishing’ in Online Dating Poses a Modern Turing Test

Which At-Home Remedies Actually Help When Sick with a Cold or Flu?

What Medications Are Safe to Take While Pregnant? Studies Are Lacking

NASA’s Bet on SpaceX’s Starship May Give Moon Race to China

Static Electricity Helps Parasitic Nematodes Leap onto Insects

How the CIA’s Kryptos Sculpture Gave Up Its Final Secret

Google Measures ‘Quantum Echoes’ on Willow Quantum Computer Chip

Zoo Lunch Mishap Reveals Lizards’ Hidden Fire Detector

Earth’s Falling Reflectivity Means the Planet Is Getting Darker—And Hotter

How Word Choice and Effort Make Apologies Sound Genuine, according to Psychologists

Retinal Implant Allows People with Blindness to Read Again in Small Trials

‘No Kings’ Protesters Reject Political Violence, Survey Shows

Storytelling Methods Alter How Memories Are Stored in the Brain, Neuroscientists Find

Study of Ultramarathon Runners Suggests There’s a Fundamental Limit to Human Metabolism

Cells Have a Crystal Trigger That Makes Them Self-Destruct When Viruses Invade

WHO Reports Global Rise in Antibiotic Resistance and Superbug Deaths

Why Aluminum in Vaccines Is Safe—And Often Essential

How to Stay Safe during RSV Season

Flu Cases Surge Early in Japan, Sparking Global Health Concerns

How to See Comet Lemmon and the Orionids Meteor Shower Peak

What Is a Quasar? The Answer Depends on Your Point of View

The El Ali Meteorite’s Journey from Landmark to Loot

A Solution to the CIA’s Kryptos Code Is Found after 35 Years

How the Government Shutdown Is Impacting Science and Research

Parrondo’s Paradox Explains How Two Losing Strategies Combined Can Win

How ‘Wood Vaulting’ Could Help Slow Climate Change

Jake Paul’s Deepfake Gambit Sparks Debate over Sora Cameos and Digital Likeness Rights

Men’s Brains Shrink Faster than Women’s. What That Means for Alzheimer’s

Why Lung Cancer Is Increasing among Nonsmoking Women Under Age 65

CDC Cuts Threaten Public Health Nationwide, Fired Employees Say

Nobel Prize in Economics Awarded for Research on Science, Technology and Growth

What is Type 1 Diabetes? Here’s Your 5-Minute Primer

Has JWST Finally Found an Exomoon?

Immigrants Make Up More Than 30 Percent of Nobel Science Winners Since 2000

New DNA Search Engine Brings Order to Biology’s Big Data

Workouts Help to Treat Cancer and Improve Survival

Why Building an Artificial Pancreas for People with Diabetes Is So Hard—And How Tech Is Finally Catching Up

What Brain Science Reveals about Ethical Decline and Moral Growth

Science Crossword: Organized Chaos

NASA Is Crucial to the U.S. Winning the New Space Race

Math Puzzle: Find the Time

Contributors to Scientific American’s November 2025 Issue

Complex Life May Have Evolved Multiple Times

Can Genetic Testing Predict Type 1 Diabetes? Experts Say Earlier Treatment Is Possible

Advances in Type 1 Diabetes Science and Tech