
Scientists Pinpoint Gene in Sperm That May Be Key to Male Infertility
Without the gene Poc5, male mice produced no viable sperm, pointing to a possible link to infertility

Scientists Pinpoint Gene in Sperm That May Be Key to Male Infertility
Without the gene Poc5, male mice produced no viable sperm, pointing to a possible link to infertility
The Scientific American Staff’s Favorite Books of 2025
NASA Faces Its Future at Jared Isaacman’s Confirmation Hearing
Autonomous Deep-Sea Robots to Lead New Search for Missing Flight MH370
Spellements: Wednesday, December 3, 2025

Satellites Swarming Low-Earth Orbit Threaten Space Telescopes
Scientists Just Tore Up a Major Particle Physics Theory
Scientific American Shares Its First-Ever Best Fiction and Nonfiction Books of the Year
Trump’s MRI Is Not Standard ‘Preventive’ Care, Say Experts

Mars Sample That May Contain Evidence of Life Might Never Come Home
Can Digital Ghosts Help Us Heal?
Create as many words as you can!
Stretch your math muscles with these puzzles.
How Wild Turkeys Made a Comeback from Near Extinction
Tamer Raccoons, COP30 Recap, New Fluoride Research
Nanocosmos Shows Nature’s Invisible Art
How to Keep Your Gut Happy This Holiday Season

The Incredible, Unlikely Story of How Cats Became Our Pets
Two new studies dig into the long, curving path that cats took toward domestication

Trump’s MRI Is Not Standard ‘Preventive’ Care, Say Experts
“It is certainly not standard medical practice to perform screening MRIs of the heart and abdomen,” says one expert

Raccoons Are Showing Early Signs of Domestication
City-dwelling raccoons seem to be evolving a shorter snout—a telltale feature of our pets and other domesticated animals

Scientists Just Tore Up a Major Particle Physics Theory
New results from the MicroBooNE experiment at Fermilab found no evidence of a hypothetical fourth flavor of neutrino

The Scientific American Staff’s Favorite Books of 2025
Here are the 67 books Scientific American staffers couldn’t put down this year, from fantasy epics to gripping nonfiction

This Is the Math at the Heart of Reality
Mathematics is not only an esoteric vocation but also indispensably alive and deeply human