Scientific American.com

Babies lacking in key gut bacteria are at greater risk of developing asthma, allergies or eczema

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, satellites and other key services take hold

History tells us what happens when great nations attack science

An attosecond—or 0.000000000000000001 second—is no time at all for a person. That is not so for electrons, atoms and molecules, and laser-wielding scientists are revealing the action

A hydrologist explains why Texas Hill Country is known as Flash Flood Alley and how its geography and geology can lead to heavy downpours and sudden, destructive floods

Being conscientious will serve kids in the long run. Here are some tips to help them learn that trait

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

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

The National Weather Service issued timely alerts, meteorologists say, but few were listening in the hours before the early-morning flash floods along the Guadalupe River

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

We spoke with NASA astronaut Matthew Dominick in an exclusive, first-ever interview from the cupola of the International Space Station.

In principle, this impossible math allows for a glue-free bridge of stacked blocks that can stretch across the Grand Canyon—and into infinity

Climate change left its signature on the atmosphere early in the industrial revolution, reveals a thought experiment investigation

The June heat dome contributed to the deaths of at least three people. They have died as federal regulators have weighed whether to finalize the nation’s first heat protection rule for workers

When tested on their own and in mice, these bacterial strains from the human microbiome show promise in accumulating PFAS

The future is bright—too bright—for life as we know it once the sun transforms into a red giant star

Adult brains grow new neurons, and scientists have finally pinpointed where they come from

Forty years after the first effort to extract mummy DNA, researchers have finally generated a full genome sequence from an ancient Egyptian, who lived when the earliest pyramids were built

Evidence shows that Medicaid improves people’s health and is particularly vital for babies, older people in need of long-term care and people in rural communities

All eyes are on Comet 3I/ATLAS as astronomers worldwide chase the exotic ice ball through our solar system