EcoWatch: Gathering in a local park with neighbors to watch city-sponsored fireworks or shooting off (sometimes illegal) fireworks in the backyard have become a time-honored way of celebrating the 4th. But thanks to the ongoing drought, some communities on the west coast have eliminated their city-sponsored fireworks displays while many more have clamped down on personal fireworks. And fire departments across the country are on high alert over concern that illegal fireworks could fuel brush fires that turn...