To celebrate Scientific American ’s 180th anniversary, we’re publishing a jigsaw every weekday to show off some of our most ...

One of history’s dark jokes is that the Roman Empire, for all its vaunted accomplishments, only made a single great ...

An attosecond—or 0.000000000000000001 second—is no time at all for a person. That is not so for electrons, atoms and ...

Flash floods happen when heavy rains unleash more water than the ground can absorb, causing that water to pile up and flow to ...

Babies lacking in key gut bacteria are at greater risk of developing asthma, allergies or eczema Dirty diapers are more than ...

Forecasts and warnings largely worked during the recent flooding catastrophe in Texas. Those systems are expected to degrade as President Donald Trump’s cuts to the National Weather Service, satellite ...

The National Weather Service issued timely alerts, meteorologists say, but few were listening in the hours before the ...

Brain differences in children and teens who experiment with drugs early show up before they take their first puff or sip ...

Chemical fingerprints from volcanic rock offer hints of what’s happening in the mantle below the area where three rift zones ...

A hydrologist explains why Texas Hill Country is known as Flash Flood Alley and how its geography and geology can lead to ...

Even if Earth does survive, it won’t be pretty. The temperature of our planet will be about 1,300 degrees C, hot enough to ...

Conscientiousness appears to be about 40 to 50 percent heritable, so conscientious parents tend to raise conscientious kids.