July 4! 250th anniversary of the Declaration of Independence. A busy fireworks night beckons

July 4, America's biggest fireworks night, draws on apace and my book 'A History of Fireworks from their Origins to the Present Day' (Reaktion Books) is drawn on heavily in this article for the American educational magazine 'Science World'. This year being the 250th anniversary of the Declaration of Independence, the displays will probably be bigger than ever.