Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles.
Processing can turn the same plastic into very different products.
It took Black chemist Percy Julian more than 10 years to earn his Ph.D.
Hidden under Paris is a rich source of limestone, a vast labyrinth of quarry tunnels.
This researcher shoots lasers at trees in order to measure how much carbon forests store.
Asteroid samples and strange space molecules wowed us—while past epidemics taught us valuable lessons.
Opening up the Tongass National Forest to additional logging and development could have serious implications for both the environment and the Alaska Native communities that depend on it.
Solar geoengineering is like drawing a curtain over the face of the Earth.
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