In this special issue, the experts from BBC Focus Magazine reveal the answers to questions that intrigue and baffle even the brightest of brains. BIG questions like... ❱❱ Why do we dream? ❱❱ How do astronauts keep clean? ❱❱ Could we clone a dinosaur? ❱❱ Is a black hole really a hole? ❱❱ Why do cats hate water? ❱❱ Why do sweaty feet smell of cheese?"