Physical chemists are focused on understanding the physical properties of atoms and molecules, the way chemical reactions work, and what these properties reveal. Their discoveries are based on ...

The giant explosion at a fertilizer plant in West, Texas, that killed between 5 and 15 people likely released a cloud of caustic ammonia gas that could have drifted for miles, experts say. Ammonia’s ...

Hundreds of people were evacuated from a city in Oklahoma and others were told to shelter in place after a tanker truck that ...