Irish physicist William Rowan Hamilton’s pioneering work contained hints of the enigmatic wave–particle duality that governs the universe.

Poppi settled a class action lawsuit alleging misleading "gut healthy" marketing claims. Consumers who bought Poppi drinks between January 23, 2020, and July 18, 2025, can claim refunds. Claims must ...

U.S. President Donald Trump meets with United Nations Secretary-General Antonio Guterres (not pictured) during the 80th United Nations General Assembly, in New York City, New York, U.S., September 23, ...