Why do boats have round portholes?

Aeroplanes also have round windows, but why. Plus, farts, brain capacity and lightning travelling through your plumbing...
20 May 2022
Presented by Chris Smith with Lester Kiewit, 567 CapeTalk. 
Production by Chris Smith.

PORTHOLE.jpg

A porthole on a ship

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Shortages of cooking oil, risks of being hit by lightning and can lightning travel through your plumbing; why boats have round portholes; what's the memory capacity of a human brain; can we measure happiness; do animals feel happy and sad like we do; what gives farts their unique characteristics, why do stars twinkle? Lester and Dr Chris have the answers...

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