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How do fireworks work? A pyrotechnics chemist explains the science behind the brilliant colors and...
The Conversation via Yahoo News· 5 hours agoTo make black powder, all you need to do is mix 75% potassium nitrate, 15% charcoal and 10% sulfur....
General election 2024: your best dogs at polling stations photos
Evening Standard via Yahoo News· 3 hours agoFirst-time voter Sky at the polling station in Bedfordshire (Kathleen Eggins / submitted)...