
Wildfire Smoke from Canada Blankets the U.S. Midwest in Haze of Bad Air Quality
Winds from the northwest are blowing cool, dry air—but also wildfire smoke—into the U.S. Midwest from Canada
Wildfire Smoke from Canada Blankets the U.S. Midwest in Haze of Bad Air Quality
Winds from the northwest are blowing cool, dry air—but also wildfire smoke—into the U.S. Midwest from Canada
Claude 4 Chatbot Raises Questions about AI Consciousness
The Physics of Spinning Black Holes Explained
Science Quiz: Dark Matter and Missing Memories
U.S. Science and Scientific American Have Weathered Attacks Before and Won
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Killer Sudoku: August 1, 2025
Why Ticks and Lyme Disease Are Soaring This Summer
Allergens May Make Us Cough and Sneeze by Poking Holes in Airway Cells
How an Article about the H-Bomb Landed Scientific American in the Middle of the Red Scare
Reckoning with Our Mistakes
Jigsaws: SciAm Cover Art
Evolution of the Scientific American Logo
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The Secret to the Strongest Force in the Universe
Why Aren’t We Made of Antimatter?
This Summer’s Extreme Weather Explained: Flash Floods and Corn Sweat
Summer Meteor Showers, Short Summer Days and Ancient Arthropods
What It’s Like to Live and Work on the Greenland Ice Sheet
Bring These Scientific American–Recommended Books to the Beach This Summer
Why the Russian Earthquake Didn’t Cause a Huge Tsunami
Russia’s magnitude 8.8 earthquake spawned serious tsunami warnings, but waves have been moderate so far. Here’s the geological reason why
When the Sun Becomes a Red Giant, Will Any Planet Be Safe?
The future is bright—too bright—for life as we know it once the sun transforms into a red giant star
You Don’t Remember Being a Baby, but Your Brain Was Making Memories
Brain scans capture memory formation in babies, raising new questions about why people forget their earliest years
The Potato’s Mysterious Family Tree Revealed—And It Includes Tomatoes
About nine million years ago, a hybridization involving the lineage of another farmers market star gave rise to the modern-day cultivated potato
515-Mile-Long Lightning Megaflash Sets New World Record
A lighting flash that spanned from East Texas to an area near Kansas City in 2017 is officially the longest lightning strike ever measured, according to the World Meteorological Organization
Hidden Lake Bursts through Greenland Ice in ‘Extremely Surprising’ Event
Water usually flows downward, but something strange happened under Greenland’s ice sheet when a deluge punched through the surface to scour an area nearly twice the size of New York’s Central Park