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Reptile teeth have long been considered simple and cheap because the animals replace them regularly. That isn't so, Komodo dragons show

Researchers are still working to understand the complicated and debilitating condition dubbed long COVID

Dogs can smell when people are stressed, and it seems to make them feel downhearted

The busy beaver function is unpredictable. But now, after more than 40 years, the fifth value of the function has been revealed

Despite progress, the long shadow of racial violence continues to undermine economic opportunities for African Americans today

The benefits of being polite to AI may include prompting better chatbot replies—and nurturing our humanity

Cocaine has been detected in sharks for the first time, but scientists aren’t sure of the impact

A 1972 law that allows states to avoid OSHA regulations for public-sector employees is undermining the nation’s first proposed worker safeguards for heat

A novel way of making superheavy elements could soon add a new row to the periodic table, allowing scientists to explore uncharted atomic realms

The U.S. and China are collaborating less on projects across scientific disciplines amid a culture of fear in both countries

The Olympics are a sustainability nightmare, and Paris, despite its efforts, is no exception

An athletic trainer explains why bodies need time to acclimatize to extreme heat and what risks to watch out for to avoid heat illness in student athletes

The VIPER lunar rover promised a revolution in our understanding of the moon’s precious deposits of ice. Then NASA cancelled the mission

Advanced meditation is changing how we think about consciousness. Hear neuroscience researcher Matthew Sacchet explain his journey to studying what happens to the brain during a deeper engagement with meditation.

A bizarre fossil of a Cambrian creature that looked like an “alien fish taco” reveals how a single group with jaws came to account for around 90 percent of all animal species on Earth

A California company says it has developed a novel way of making concrete that doesn’t contribute to global warming

As the daughter of a cancer researcher, Kamala Harris would bring a lifelong familiarity with science to the presidency, experts say

Scientists hope the incredibly rare beaching of a spade-toothed whale will help them learn more about this persistently elusive species

Temperatures in Fairbanks, Alaska, are predicted to reach a record-tying 90 degrees Fahrenheit because of a prolonged, unusually late heat wave

The current presidential race has ensured that age will be a key and likely fraught consideration in future elections. Can science help determine how old is too old for a candidate before politics does?