Pythagoras' Trousers

Taking your brain for a walk, tea bag rockets and a possible Earth-like planet
Rhys talks to Professor Kirk Erickson about new research that shows that going for a walk can prevent your brain from shrinking and delay onset of dementia, Zoe Randell from science made simple explains how you can make a tea bag rocket at home, we meet mechanical engineer Milada Williams, Chris North talks to Meg Schwamb about the discovery of the best candidate to date for an Earth like planet and Hugh Lang looks ahead to the night’s sky over the next month.

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