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Wildfire Smoke from Canada Reduces Air Quality in U.S. Midwest
Winds from the northwest are blowing cool, dry air—but also wildfire smoke—into the U.S. Midwest from Canada...Published: August 1, 2025 - 3:37 pmU.S. Science Has Weathered Attacks Before and Won
Federal officials seized 3,000 copies of Scientific American in 1950 in a “red scare” era of attacks on science. The move backfired, and offers lessons for today...Published: August 1, 2025 - 12:00 pmWhy Do Black Holes Spin?
Scientists are uncovering how spinning black holes launch jets, warp spacetime and shape the cosmos...Published: August 1, 2025 - 10:45 amAnthropic’s Claude 4 Chatbot Suggests It Might Be Conscious
A conversation with Anthropic’s chatbot raises questions about how AI talks about awareness....Published: August 1, 2025 - 10:00 am4 Science Book Recommendations We Loved Reading in July
Check out Scientific American’s fiction and nonfiction book recommendations for July...Published: July 31, 2025 - 5:00 pmWhy Do Allergens Make Us Cough and Sneeze?
The immune system senses damage to cell membranes caused by pore-forming proteins and mounts a response...Published: July 31, 2025 - 4:00 pmMiniature Neutrino Detector Catches Elusive Particles at Nuclear Reactor
A relatively small detector caught neutrinos from a nuclear reactor using a technique known as coherent scattering...Published: July 31, 2025 - 3:45 pmBrains React to Signs of Illness—Even When It’s Not Real
When people viewed virtual avatars with coughs or rashes, their brain triggered an immune response...Published: July 31, 2025 - 3:15 pmHow the Potato Got Its Start Nine Million Years Ago—Thanks to a Tomato
About nine million years ago, a hybridization involving the lineage of another farmers market star gave rise to the modern-day cultivated potato...Published: July 31, 2025 - 3:00 pmLightning Strike Sets New Record for Longest Ever Measured
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...Published: July 31, 2025 - 12:00 pm
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