The president leaned on House Speaker Mike Johnson to name a Florida Republican whose grave prognosis was imperiling the party’s already slim voting margin. Both said his prospects had improved. By ...

Alzheimer’s has long been considered irreversible, but new research challenges that assumption. Scientists discovered that severe drops in the brain’s energy supply help drive the disease—and ...

Have you ever noticed that some planets sometimes seem to move backwards in the night sky? This puzzling phenomenon, observable with the naked eye, has intrigued observers for centuries. Jupiter, the ...