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Huge online Trolley Problem survey reveals people's cultural bias

24 October 2018

A survey posed ethical dilemmas to millions of people to help develop self-driving cars, but some worry the results could bake our biases into new technology
An artistic impression of galaxies

7 explanations for why mysterious radio bursts are coming from space

19 October 2018

Astronomers are scratching their heads over extremely fast radio bursts. Now they're making a list of all the theories for what - or who - is making them

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