Greg is a Science Daredevil & TV Presenter, who has been shot, frozen, electrocuted and buried alive in the name of science. He’s even gone under the knife to find out what human’s taste of. Luckily he won’t be doing any of this on the night –  that would be too messy and void our insurance. However he is going to be diving into the dark side of science: Alchemy. He’ll be detonating a batch of homemade gunpowder and giving us a booming tour of other explosives that have shaped the world, including nitroglycerin, uncovering just what gives fireworks their shape, colour and BANG.