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What not to grab if you jump out of a building. Not for the faint hearted – experiments on roller coasters. Getting down to the big questions down at the lab. What is Britain’s stretchiest food. We perform an eggsperiment on Brainiac Joe. How permane... (more)nt is a permanent marker. What is the quickest way to send a text. Going on a picnic – how to tell it’s not going to rain. Does eating floaty foods produce floaty poo. Can the carbon dioxide wheelchair win in a race. Cutting up onions – what should you do if you don’t want to blub in the kitchen. Lad v Lass discovers which is better at remembering.

David Seaman, Ian McCaskill, Rowetta Satchell