There’s a sensation many of us might have experienced: when something routine or recognisable suddenly feels strange and unfamiliar. It’s known as jamais vu, or ‘never seen’. Research into this odd feeling recently won an Ig Nobel prize, which is awarded to science that makes you laugh, then think. Ian Sample speaks to Ig Nobel recipient Dr Akira O’Connor about why he wanted to study jamais vu, what he thinks is happening in our brains, and what it could teach us about memory going right, and wrong

Ian Sample hears from the Guardian’s Europe environment correspondent, Ajit Niranjan, about the reporting he has been doing for the launch of our new Europe edition. He talks about Osijek, a Croatian city that has the highest heat mortality rate in Europe … but no one knows why

The Royal Observatory in Greenwich has announced winning and commended entrants in this year’s contest

Japan has launched a rocket carrying a small lunar lander and an X-ray telescope that will explore the origins of the universe