Following the staggering success of Does Anything Eat Wasps? and Why Don't Penguins' Feet Freeze?, the New Scientist team, led by Mick O'Hare, turn to scientific conundrums that can be answered by simple experiments which can be done at home and enjoyed by the armchair scientist. How can you measure the speed of light with chocolate and a microwave? Why do yo-yos yo-yo? Why does urine smell so peculiar after eating asparagus (includes helpful recipe)? How long does it take to digest different types of food? What is going on when you drop mentos in to cola? This work contains 100 wonderful, intriguing and entertaining scientific experiments which show scientific principles first hand - this is science at its most popular.