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Scientists say microscopic black holes could explain the elusive "dark matter" that makes up a quarter of all matter in the universe. But can it be proven?

Entrepreneur Emmet Stephenson and his daughter are giving $150 million to City of Hope to fund an award for innovation research in pancreatic cancer. It's the largest single gift the center has received.

An industrial chemical used in plastic products has been cropping up in illegal drugs from California to Maine.

To improve survival for esophageal cancer patients, researchers are using artificial intelligence to improve screening for the disease.