Stuff Matters: 8 key ideas
The core ideas of Stuff Matters, each in under a minute, written in our own words. Want the full depth? Get the book.
- IDEA 1 OF 8
Materials shape our world
Miodownik, a materials scientist, argues that the everyday materials around us are full of hidden wonders.
He explores what they are made of and why they behave as they do.
- IDEA 2 OF 8
Steel's strength comes from structure
Miodownik explains that steel gets its strength from the arrangement of iron and carbon atoms inside it.
Small changes in how it is made produce very different properties. Steel is a good example of how structure matters as much as ingredients.
- IDEA 3 OF 8
Paper changed civilisation
Miodownik describes how paper, made from plant fibres, transformed writing, money and record keeping.
It remains surprisingly useful in many forms. Before paper, keeping and sharing knowledge was far harder and more costly for most people.
- IDEA 4 OF 8
Concrete built the modern world
Miodownik explains how concrete hardens through chemical reactions and why it is so widely used.
He describes new versions designed to repair their own cracks. It is simple to make and strong in a building, which explains its popularity.
- IDEA 5 OF 8
Chocolate is cleverly engineered
Miodownik explains that chocolate is designed to melt at just below body temperature.
Its crystal structure gives it its snap and smooth feel. Because of this, it melts in the mouth in a pleasing way.
- IDEA 6 OF 8
Foam can be almost nothing
Miodownik describes aerogel, a solid that is mostly air and extremely light.
It is an excellent insulator and has been used in space missions. Its tiny pores of air are what make it so light and a poor carrier of heat.
- IDEA 7 OF 8
Glass is a strange solid
Miodownik explains that glass has a disordered atomic structure, more like a frozen liquid than a crystal.
This gives it its clarity. Its atoms are jumbled instead of lined up, which lets light pass straight through.
- IDEA 8 OF 8
Carbon takes many forms
Miodownik describes how carbon can form soft graphite, hard diamond and graphene, a single layer of atoms with remarkable strength.
The same element behaves in very different ways depending on how its atoms are joined together.
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