Happy Fourth of July 2015

Fireworks manufacturers have been on something of a winning streak of late: Sales of both low-and high-grade celebratory explosives in the U.S. are projected to top $1 billion this year; more states than ever now allow consumers to buy sparklers, Roman candles and other do-it-yourself pyrotechnics. Obscure regulations are being scaled back to help light up the country's summertime skies.