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1

Game theory explains why the US's goals in Iran keep changing

2

How we discovered the speed limit of arithmetic – and broke it

3

The rise, the fall and the rebound of cyclic cosmology

4

A whole new way to prevent death from sepsis shows promise

5

Beef is making a comeback – does it fit into a healthy diet?

6

We might finally know how to use quantum computers to boost AI

7

The biggest threat to Chernobyl is no longer radiation

8

Exclusive report: Inside Chernobyl, 40 years after nuclear disaster

9

People are refusing transfusions from donors vaccinated against covid

10

We can block the spread of HIV: Best ideas of the century