The two aides to Labor Secretary Lori Chavez-DeRemer had been on leave during an investigation of misconduct at the department.

Prediction markets like Polymarket and Kalshi are big business, and some Big Tech employees are testing boundaries by making ...

Defect-filled lead-halide perovskites rival silicon solar cells because domain walls inside the material separate and guide charges. Researchers visualized these charge-transport networks using a ...