How do fireworks work? A pyrotechnics chemist explains the science behind the brilliant colors and sounds

Tackle.io, an Idaho-based startup that helps software companies sell through cloud marketplaces such as AWS’s, announced today it has raised a $100 million Series C funding round. Co-led by Coatue and Andreessen Horowitz, the round also saw participation from Bessemer Venture Partners.Bringing Tackle’s total funding to $148 million, the Series C turned Tackle into a unicorn with a $1.25 billion va