Library / Big Ideas & History / A Short History of Nearly Everything
16 key learnings from Bill Bryson's entertaining tour of science, from the Big Bang to human origins. Each takes about 40 seconds to read. Swipe, use the arrows, or your keyboard.
All 16 learnings · one per slide
Bill Bryson, in bytes
16 key learnings on how we know what we know about the universe and life.
Learning 1 · Introduction
The story
On a flight over the Pacific, Bryson realised he knew almost nothing about the planet he lived on, and set out to learn.
His approach
He asked scientists how they knew what they knew.
Takeaway
Curiosity is the start of knowledge.
Learning 2 · Part I
The idea
The universe began about 14 billion years ago from an incredibly small, dense state.
Example
The cosmic background radiation was first detected by accident, as static in an antenna.
Takeaway
Science pieces together origins from clues.
Learning 3 · Part I
The idea
The universe is vast beyond imagination.
Example
Light from the nearest star beyond the Sun takes more than four years to reach us.
Takeaway
We live on a tiny speck.
Learning 4 · Part II
The story
Henry Cavendish, a shy English scientist, used a delicate apparatus to calculate the Earth's density in 1797–98.
The lesson
Brilliant experiments often came from eccentric people.
Takeaway
Science is full of odd heroes.
Learning 5 · Part II
The story
Clair Patterson measured the Earth's age at about 4.5 billion years using lead in meteorites.
Also
He then campaigned against lead pollution from petrol.
Takeaway
Discovery can lead to action.
Learning 6 · Part II
The story
Early fossil hunters like Gideon Mantell and Richard Owen competed fiercely to name dinosaurs.
Example
Mantell's discovery of Iguanodon.
Takeaway
Science has rivalries and personalities.
Learning 7 · Part III
The idea
Atoms are mostly empty space, with tiny nuclei.
Example
Rutherford found the nucleus by firing particles at gold foil.
Takeaway
Matter is stranger than it looks.
Learning 8 · Part III
The idea
Einstein's relativity showed space and time are linked and bend with mass.
Example
Time runs slightly differently on satellites, which GPS must correct for.
Takeaway
Reality isn't intuitive.
Learning 9 · Part III
The story
Alfred Wegener proposed continental drift and was mocked; plate tectonics later proved him right.
The lesson
Good ideas can be rejected for decades.
Takeaway
Evidence eventually wins.
Learning 10 · Part IV
The idea
Earth faces threats from asteroids, earthquakes and supervolcanoes.
Example
Yellowstone sits on a vast supervolcano.
Takeaway
We're luckier than we know.
Learning 11 · Part V
The idea
Bacteria and microbes live almost everywhere, even in extreme environments.
Example
Microbes found deep in rock and in boiling springs.
Takeaway
Life is resilient.
Learning 12 · Part V
The idea
Each of our cells is a busy, complex world.
Example
Billions of cells each running thousands of processes.
Takeaway
We're made of tiny machines.
Learning 13 · Part V
The story
Darwin delayed publishing his theory of evolution for about 20 years.
The prompt
Alfred Russel Wallace reached a similar idea, pushing Darwin to publish.
Takeaway
Ideas often arrive in more than one mind.
Learning 14 · Part V
The idea
DNA, discovered and then decoded in the 20th century, carries the instructions for life.
Example
Rosalind Franklin's images helped Watson and Crick find its structure.
Takeaway
Credit in science isn't always fair.
Learning 15 · Part VI
The idea
Humans have caused many extinctions.
Example
The dodo was wiped out soon after people arrived on Mauritius.
Takeaway
We have a responsibility to life.
Learning 16 · Part VI
The idea
Bryson ends by noting how improbable our existence is, and how fragile.
Example
Countless chances had to go right for any of us to exist.
Reflect
What will you do with this lucky life?
All 16 learnings complete
Science is a story of curious people. What everyday wonder would you like to understand?
Summaries are written in my own words for learning. Read A Short History of Nearly Everything by Bill Bryson (2003) for the full stories. More Books in Bytes
