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Cardiologists are struggling to figure out why a drug that should have prevented heart attacks didn’t work at all.

Tribes and scientists are mounting an urgent trapping effort to keep European green crabs from devastating a corner of Puget Sound.

New estimates using the planet’s surface wrinkles show that our smallest planet is growing even smaller, at a faster clip than expected.

The screens of foldable phones are a triumph of materials science and microengineering.

Tristan Buckmaster was on the path toward an important proof when one of the A.I. giants used its staggering resources to get there first.

The technology is far from the only existential risk our species faces. But weighing such cosmic fears can become a mind-bending exercise.

A controversy around OpenAI’s latest math proof raises a fear that might become increasingly common: that A.I. tools could take valuable insights from one user and hand them to another.

Low rainfall and shrinking rivers are causing shipping bottlenecks, and higher prices, around the world.

Two researchers who study the debilitating sleep disorder have won a prestigious Lasker Award. Their research in animals laid the groundwork for a new drug that addresses the condition’s root cause.

Five years after virtually every world leader agreed to “phase down” the burning of coal for climate reasons, the fuel is more widely used than ever.