The idea was that high-powered lasers would propel tiny probes to 20 percent of the speed of light, impelling them with ...

While our understanding of Alzheimer’s disease is far from complete, the latest therapies, and others in more than 100 ...

When the quark hypothesis was first proposed more than 10 years ago, there were supposed to be three kinds of quark. The ...

Forest ecologist Mark Harmon has been exhaustively examining dead logs for 40 years, and he’s found a complex world few ...

More than 13.8 million Americans could have Alzheimer’s by 2060, and at the rate care facilities are closing, many of them ...

I swim up, rapt, to visibility. I whisper my secret only to you, the clue, first word of the organic story. The ancient ...

New Alzheimer’s drugs known as anti-amyloid therapies may slow disease progression—but they also carry serious risks, including brain bleeds and strokelike symptoms ...

Early studies suggest that lifestyle changes such as diet, exercise and social engagement may help slow or prevent ...

The global incidence of Alzheimer’s is increasing at a rapid rate. In the U.S., more people than ever are being diagnosed ...

Letters to the editors for the May 2025 issue of Scientific American ...

Many of these items are fast fashion—made quickly, sold cheaply, and in style for too short a time because the industry ...

A child picks out a bandaid as he prepares to get his COVID vaccination in San Jose, Calif., in 2022. COVID shots are among ...