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 ...

An anthropologist’s detailed research shows polyamorists focus on intimacy and honesty, not sleeping around T he first time her husband went on a date with another woman, Kelly felt sick to her ...

A fascinating feature of vitamin D is that it isn’t always obtained through diet. Ultraviolet B (UVB) rays in sunlight produce the D 3 form of the vitamin in humans’ skin, as noted in “ The Rise and ...

Tests that could reveal when Alzheimer’s disease will emerge, while promising, are not ready for use in otherwise healthy people, scientists say ...

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 ...

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

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

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” ...

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