Rebecca presents "Projectile Trajectory of Penguin's Faeces and Rectal Pressure Revisited" by H Tajima et al. It's more history than maths (we promise!), Agnes flexes her miaowing muscles and in true Cats and Charts fashion all the names are mispronounced. Thanks to Georgina for the paper recommendation! As always we try to understand science well enough to explain it to our mums and key cat updates are provided.

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