Most of the western U.S., including the Lake Tahoe region of California and Nevada, has had an exceptionally warm winter—breaking records in many areas. And that unseasonable warmth may have caused a ...

Medical and environmental groups are challenging the EPA’s decision to break with the longstanding scientific evidence that ...

A new Brooklyn, N.Y. high-rise sits atop 320 geothermal boreholes. It’s a feat of waterfront engineering—and one blueprint ...

Putting humans and LLMs head-to-head in classic tests of judgment from human psychology underscores the differences between ...

Fossils are remarkable for their ability to viscerally connect us with long-lost life. The bulk of a Tyrannosaurus rex skull, ...

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” ...

The recent withdrawal of Hims & Hers’ GLP-1 pill raises questions about the safety and effectiveness of compounded medications ...

In the animal kingdom, doting dads are scarce: Research shows as few as 3 to 5 percent of mammal fathers take an active role in parenting their offspring. But why some seem more geared toward ...

Scientists have captured footage of a sleeper shark farther south than ever before, suggesting this Antarctic ocean is not shark-free ...

After initially rejecting Moderna’s application for review, the FDA will now consider the company’s mRNA flu shot ...

VO2 max is an important measure of aerobic conditioning, whether you’re an Olympian or just a person hoping to stay healthy ...

Below the surface, Greenland’s ice appears to be churning up, a process one scientist described as akin to a “boiling pot of pasta” ...