Earth’s tilt is what causes the seasons; in the summer, when our planet’s pole is tipped toward the sun, the days are longer, ...

The White House’s budget plan for NASA would be woefully inadequate for achieving near-term human voyages to Mars, experts ...

Science communicator Hank Green explains how our species’ unique intelligence got us into this climate mess—and how it will ...

Layoffs and funding freezes have gutted the CDC’s response to the opioid crisis—just as harm reduction was beginning to work ...

Nearly 600 employees left the National Weather Service or were fired in recent months. Meteorologists say 125 expected new ...

Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. About 317 billion times per year members of the U.S. public check the weather on their phones, TVs or some other source.

Surveys show that how nuclear strike options are presented strongly influences the decision a president may make ...

White House Budget Plan Would Devastate U.S. Space Science Scientists are rallying to reverse ruinous proposed cuts to both ...

A 40-year-old conjecture on shapes’ cross sections is finally proven ...

The velvet worm, a squishy little predator that looks like the stretch-limo version of a caterpillar, has a whimsical MO: it ...

Government layoffs threaten to make it easier for the Trump administration to ditch draft heat safety regulations ...

The Haenyeo, an all-female group of divers on South Korea’s Jeju Island, spend much of their lives underwater without ...