Telegram, the supposedly secure messaging app, has over 100 million users. You might even be one of them. If you are, you should probably stop using it right now. Here's the unfortunate truth about Telegram. It's not as secure as the company's marketing campaigns might lead you to believe.
The late 1930s were dark times for Britain. War was on the horizon, and things were about to get very, very tough. But some periodicals tried keeping things light with utopian visions of tomorrow. Like this March 5, 1938 cover of Modern Wonder which featured the streamlined transportation of the future.
An underground cave is precisely the wrong direction if you're hoping to go into space -- so why is the European Space Agency sending the latest batch of ISS-bound astronauts on a spelunking expedition? To practise for life in a sealed tin can, of course.