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Every year more than 12 million people visit the White River National Forest in central Colorado to ski, hike, bike, fish, camp and otherwise enjoy this iconic 2.3-million-acre landscape. As part of the public lands system, the forest is…

A new Alzheimer’s study has produced a first-of-its-kind genetic map, which could provide vital insights into the cause-and-effect sequences of gene activity that may be driving the disease in the brain.

This blueprint shows not only…

Your daily steps may depend on your zip code more than your willpower

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

My mother lived with Alzheimer’s disease for 12 years. Even with a lot of help, caregiving took a toll on me. It was…

This crossword is inspired by the March 2026 issue of Scientific American. Read it here. Print readers, check your answers by selecting “Assist” above and then “Reveal Grid” or by selecting “Print” and then “Solution.”

We’d love…

More than 100 years ago Hungarian-born mathematician George Pólya found himself trapped in a loop of social awkwardness. A professor at the Swiss Federal Institute of Technology Zurich, he enjoyed solitary strolls through the woods outside the…

March 2026: Science history from 50, 100 and 150 years ago

By Jeanna Bryner

Adam Hart has been a nurse at St. Rose Dominican Hospital in Henderson, Nev., for 14 years. A few years ago, while assigned to help out in the emergency department, he was listening to the ambulance report on a patient who’d just arrived—an…

When ChatGPT launched in 2022, Jen Roberts had been teaching middle or high school students for more than 26 years and was running on fumes. The pandemic had pushed many educators into burnout, but where others saw artificial intelligence as a…