Isn’t it mind-blowing that a thermos flask can keep your drink hot or cold for 8 hours, despite what’s happening in the climate around you? A real sip of relief really/ 

But who invented this incredibly helpful concept of keeping hot things hot and cold things cold? Enter the troubled and quick-tempered Scottish Chemist and Physicist, James Dewar who invents the vacuum flask.

But how did he get to this point? Join Dallas Campbell and esteemed Chemist Andrea Sella as we learn all about the history of chemistry and science that led us to this point. 

Edited by Alex Carlon, Produced by Alex Carlon & Freddy Chick. Senior Producer is Charlotte Long

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