Watch the world's largest smoke bomb in action.

Smoke is a useful thing, whether you want to hide from enemy combatants or just make a big scene at a local sporting match. Smoke devices have lots of applications, many of which will likely cause ...

BATH BOMB MAKER:You then add your citric acid and make sure that we sieve it first ... the length of your own leg and foot. Seeing through smoke - the heat camera. videoSeeing through smoke ...