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Earth’s climate has fluctuated through deep time, pushed by these 10 different causes. Here’s how each compares with modern climate change.
One hundred years after it was proposed, the Ising model is used to understand everything from magnets to brains.
Representation theory was initially dismissed. Today, it’s central to much of mathematics.
To distinguish between fundamentally different objects, mathematicians turn to invariants that encode the objects’ essential features.
Mathematicians try to figure out when problems can be solved using current knowledge — and when they have to chart a new path instead.
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