Physics
What’s eating the stars out of our galaxy’s heart?
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Issue 2778
A new calculation of pi and a separate result involving Rubik's cube both exploit the computational power of networks belonging to search engines
Electricity from rural cellphone towers in poor countries could chill vaccines, saving 5Â million lives every year, say Harvey Rubin and Alice Conant
The centre of the Milky Way is darker than you'd expect – and not just because it's home to a supermassive black hole