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180 Years of Standing Up for Science

By David M. Ewalt

You can see it coming in right there, that little spot,” says neuroscientist and engineer Laura Lewis.

A remarkably bright pulsing dot has appeared on the monitor in front of us. We are watching, in real time, the brain activity of a graduate…

Anabelle Terry, a slender, self-possessed 13-year-old, has heard the peanut butter story her entire life. At two and a half she ate nuts for the first time. Her mother, Victoria, had made a little treat: popcorn drizzled with melted caramel,…

This article was made possible by the support of Yakult and produced independently by Scientific American‘s board of editors.

Recently a friend I’ll call Anne told me she had cut gluten out of her diet to try to reduce joint pain in her hands….

To astronomers in the 1990s, these three facts were self-evident: The universe is expanding; all the matter in the universe is gravitationally attracting all the other matter in the universe; therefore, the expansion of the universe is slowing.

Two…

Plastics Started as a Sustainability Solution. What Went Wrong?

By Jen Schwartz edited…

September 2025: Science History from 50, 100 and 150 Years Ago

By Mark Fischetti

The sense of smell, it turns out, is highly individual—a scent that is enticingly floral to one person may be off-putting and chemical to another. Researchers in Germany -recently asked 1,227 participants to describe and rate 73 odors and found…