Organizers want the July 4 fireworks in the nation’s capital to break the world record. But the fun will also come with air pollution and possibly headaches for pet owners and zoo keepers. By Quinn ...

Warm holiday weather, scattered severe storms and wildfire haze could briefly disrupt crowds, fireworks and flyovers at Trump ...

Good morning, and happy semiquincentennial. That’s the fancy term, from Latin, for America’s milestone 250th birthday tomorrow. It means “halfway to 500 years.” Neat. Jour ...