Known for their straight, spiral tusks, these overgrown teeth can reach some ten feet long and are the only tusk known in the animal kingdom to grow in a completely straight line. Most male narwhals ...

The same people affected by extreme weather are also likely to worry that they will face a future disaster, according to a new poll ...

El Niño years typically mean warmer ocean temperatures and less wind shear in some parts of the Pacific—and that means more ...

For decades, an influential theory blamed the Rapanui for their own downfall—a story made famous by Jared Diamond’s book Collapse. New evidence tells a different tale ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

NASA’s Nancy Grace Roman Space Telescope will soon launch to unravel the mysteries of dark energy and dark matter ...

F orty-seven years ago U.S. President Jimmy Carter stood grinning in front of a set of 32 bulky solar panels. It was 1979, and the oil crisis had sent fuel costs skyrocketing. Car ...

Companies are making big bets on technology to solve lingering challenges in the clean-energy rollout. Here are four of the most ambitious projects ...

Two American companies are pursuing rival manufacturing strategies for these long-promised cells in an industry China dominates ...

Far overhead, out of sight and mind for most people on Earth, two different robotic missions are on the cusp of a revolutionary new era in 21st-century spaceflight. One of the missions, Katalyst Space ...

Golden Dome’s most audacious element would require a vast constellation of weapons that does not yet exist. Defense companies are already lining up to build it ...

Satellites could keep operating only because some of that debris would naturally, gradually drift down into Earth’s atmosphere, but some regions of orbit would essentially become unusable. The point ...