![The Economist Radio (All audio) show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/026/794/small/the-economist-all-audio.jpg)
Summary: In the wake of the Manchester bombing, Dr Robert Wesley explains how artificial intelligence can spot extremist behaviour early. Coloured light can now be used to control how genetically-engineered organisms behave. Also, what we must to do to preserve the oceans