0in 0in 0pt">Crash, boom, bang: destroy! There's nothing children love more than the satisfying smash and bash of things being demolished. They always do it for sheer amusement; now they can do it in the name of science. Just imagine watching a marshmallow grow bigger…and bigger: up to four times its size in the microwave. Will it blow up? or crashing cardboard racecars powered by ordinary balloons, or launching homemade rockets. With over 50 mind-blowing, eye-popping experiments accompanied by safety precautions and commonsense advice, kids and parents are set for a smashing time!