The latest great edition of How It Works is here at last. Issue 9 is on the shelves today. Don't miss issue 9, which is packed full of articles to really feed your brain. Kicking off is an exhilarating four-pager on roller coasters and the science of thrills, and if you're trying to decide between iPhone and Android, we've put them head to head in a useful buyer's guide centred on how they work. Another close-to-home feature looks at superfast broadband ...

The Gadget Show's Jason Bradbury has found a new way to enjoy How It Works – find out what he had to say about our new PixelMag… Jason Bradbury: "The wait for the digital publishing revolution is finally over and the PixelMags version of How It Works is on the frontline. With my iPad and the How It Works magazine app, I have content-rich geek journalism at my fingertips." If, like Jason, you also want to enjoy How It Works ...

Check out this video demonstrating a new iPhone controlled quadricopter from tech wizards Parrot. For more information about the Parrot AR.Drone, including an interview with one of its designers, look out for issue five of How It Works.