Also in this week's round-up: regulating cryptocurrencies and how China chats.
Also in this week's round-up: teaching ethics to AI and the rising risks to food security.
Research suggests that songs with negative lyrics became increasingly common from 1950 to 2010, but since have been on the decline.
As the so-called 'lost Leonardo' sells for an eye-watering £450 million in London, we consider the art world's most highly desired works.
Also in this week's round-up: how fake news exploded and mapping every country's favourite import.
Most Americans agree that the media and echo chambers are to blame for the spread of fake news.
Research suggests that music may not help us focus on all types of task.
Also in this week's round-up: the disturbing algorithms producing kids’ videos and why the Romans didn't have an industrial revolution.
Italy believes they can. It's now offering young people lessons.
AI researchers are now investing in video game playing for the technology.
Also in this week's round-up: the end of the urbanization trend and Afghanistan’s all woman orchestra.
Experts are evenly split on whether the coming decade will see a reduction in false and misleading narratives online.
Also in this week's round-up: how cities cope with migration, and a surprising link between trade deals and obesity.
There is only one genre of film where women appear and speak equally to men.
Advertising and the media continue to reinforce gender stereotypes, argues Professor Virginia García Beaudoux.