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The Rest Is Science

How Big Is A Piece Of Chocolate?

The Rest Is Science

Goalhanger

Physics, Science, Mathematics

4.51K Ratings

🗓️ 19 February 2026

⏱️ 64 minutes

🧾️ Download transcript

Summary

At what exact chemical ratio does our beloved chocolate devolve into a mere structure of fats and sugars? How far can you dilute chocolate before its fundamental identity vanishes? And what could a comically tiny novelty stool possibly reveal about Michael Stevens? Unlike a block of pure iron or a vial of chlorine, chocolate is not one single substance but a complex and heterogeneous mixture we all take for granted. Hannah and Michael explore the chemistry and nutritional boundaries of this everyday treat. Where does the stool come in? You'll have to listen to find out. ------------------- For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit ⁠⁠https://cancerresearchuk.org/restisscience⁠⁠ Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ. ------------------- Find The Rest Is Science all over the internet by ⁠⁠clicking here.⁠⁠ ------------------- Video Producer: Adam Thornton + Oli Oakley Video & Social: Bex Tyrrell Assistant Producer: Imee Marriott Senior Producer: Lauren Armstrong-Carter Head Of Digital: Samuel Oakley Exec Producer: Neil Fear Learn more about your ad choices. Visit podcastchoices.com/adchoices

Transcript

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0:00.0

The Premier League is exciting.

0:04.0

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And sometimes it's...

0:11.0

So when you need something to help you ride the highest and loads of all that action,

0:17.0

grab a Coke to keep you in the game.

0:20.0

Time to refresh. Time for a Coke. Coca-Cola,

0:25.0

official partner of the Premier League. This episode is brought to you by Vanta. Security and

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top companies choose Vanta.

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Do security and compliance right.

0:57.1

Get started today at Vanta.com.

1:00.0

Hello and welcome to The Rest is Science.

1:02.5

Today we're on an adventure.

1:04.8

That's right, this is Field Notes, a expedition diary where Han and I trade exciting ideas and objects and discoveries or big

1:12.2

questions that have been occupying our minds.

1:14.6

Exactly.

...

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