You're probably reading this on a device connected to the internet, while listening to this episode. But how did the digital files that make up this description, and the digital sound files that you can hear, appear, on demand, on your phone, tablet or other device? How are you connected to the internet? In this episode, we'll explain how 4G and 5G, work, Broadband through cables and satellites, and the final connection inside your home - Wi-Fi.

Technology has already completely altered our lives, and Artificial Intelligence may transform our world to an even greater degree. This series is your chance to get back to basics and really understand key technology terms. What's an algorithm? where is "the Cloud" and what exactly is Blockchain? What's the difference between machine and deep learning in artificial intelligence, and is it just our jobs under threat, or is it much worse than that? And before we get to the destruction of humanity, should we all be using Bitcoin? Our experts will explain in the very simplest terms everything you need to know about the tech that underpins your day. We'll explore the rich history of how all these systems developed, and where they may be going next.

Presenter: Spencer Kelly Producers: Ravi Naik and Nick Holland Editor: Clare Fordham Production Coordinator: Janet Staples