Mathematics

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Cover of the book "The History of Money" by David McWilliams, shown beside the text "an excerpt from" on a light green background, with subtle Fibonacci-themed details adding a mathematical touch.
Business
How the world’s first business bestseller transformed the world
Fibonacci’s "Liber Abaci" not only revolutionized commerce — it also helped nudge the world towards reasoned, quantitative enquiry.
David McWilliams
Multiplication table from 1 to 20, featuring pythagorean runs and perfect squares highlighted in yellow along the diagonal from top left (1) to bottom right (400).
Starts With A Bang
The deep mathematics of why 10² + 11² + 12² = 13² + 14²
It's not just an odd quirk of numbers that makes it true, but a deep mathematical insight that dates all the way back to Pythagoras.
Ethan Siegel
A hexagonal telescope with a gold exterior and an open, black interior is shown against a black background, highlighting NASA habitable worlds observatory science.
Starts With A Bang
NASA’s Habitable Worlds Observatory: the future (or end) of NASA science
At the end of July, hundreds of scientists convened to plan NASA's upcoming astrophysics flagship mission. Will the US allow it to happen?
Ethan Siegel
A digital illustration showing a glowing blue particle on the left, evoking cosmic inflation, transitioning into a geometric, grid-like structure on a purple background on the right.
Starts With A Bang
Ask Ethan: Does cosmic inflation violate energy conservation?
A few physical quantities, in all laboratory experiments, are always conserved: including energy. But for the entire Universe? Not so much.
Ethan Siegel
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