Terry Tao. Photograph: Graeme Mitchell/The New York Times

Pick a number; if it is even, divide it by 2; if odd, triple it and add 1. Now repeat the process, each time halving or else tripling and adding 1. He(...)

Prof Terry Tao’s Hamilton lecture will draw on his childhood fascination with astronomy and distances between planets.

Terry Tao is probably the world’s best problem solver in mathematics – the skill that is the essence of this essential creative science. So it’s more(...)

The US says the St Petersburg-based Internet Research Agency has used social media to spread disinformation about US elections. Photographs: Nicolas Asfouri and Lionel Bonaventure/AFP via Getty Images

After the FBI tipped off Facebook that the obscure leftwing website Peace Data was a clandestine front for Russia this week, the site’s anonymous admi(...)

Protesters plan to mark Juneteenth with demonstrations against racism and police brutality. Photograph: Jeenah Moon / Getty Images

A growing list of US companies across finance, technology, retail and other industries are giving employees Friday off to commemorate Juneteenth. Whil(...)

 Protesters march down 5th avenue  on June 10th in New York City. Photograph: David Dee Delgado/Getty Images

There are no racists in the United States. I immigrated here 27 years ago, and I have never met anyone who would call themselves a racist. And yet&nbs(...)

Dr Mary Canning, President of th Royal Irish Academy. Photograph: Johnny Bambury.

The setting up of an independent network of scientific advisers is needed to advise government “on the formidable scientific challenges facing Ireland(...)

Christine Lagarde, president of the European Central Bank, says Sweden’s monetary policy reversal does not mean that the ECB will follow suit. Photograph: John Thys/AFP/Getty Images.

It is the biggest monetary policy experiment of modern times. One that has divided economists, central bankers and politicians. But now that Sweden ha(...)

Prof Didier Queloz of Cambridge University at a press conference in London after he jointly won the 2019 Nobel Prize for Physics. Photograph: Yui Mok/PA Wire

Canadian-American cosmologist James Peebles and Swiss scientists Michel Mayor and Didier Queloz won the 2019 Nobel Prize for Physics on Tuesday for wo(...)

Researchers  found that a number of smart TVs, including those made by Samsung and LG, and the streaming dongles Roku and Amazon’s Fire TV, were sending out data. Photograph: iStock

The smart TVs in our homes are leaking sensitive user data to companies including Netflix, Google and Facebook even when some devices are idle, accord(...)

Globalisation was always about much more than increased trade. Its origins lie in the liberalisation of finance and the weakening of nation states. Photograph: Wiktor Szymanowicz/Barcroft Media via Getty

Is the era of globalisation coming to an end? Are we moving to an increasingly multipolar world? Will existing global institutions be replaced by new (...)

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