Explore the hidden secrets of our planet with award-winning duo, Mike Barfield and Jess Bradley.Invisible Worlds invites curious readers to take a closer look at the world around us, and marvel at the huge powers behind the tiniest phenomena.From the tiny organisms thriving all around us to the invisible energy waves sending signals to our gadgets, the world is brimming with activity that we can’t see.Some really small things can only be seen with the most powerful microscopes, while other things are just plain invisible. Did you know that hawks use ultraviolet light – invisible to humans – to see trails of wee left by mice so that they can find their next meal? Or that invisible magnetic fields are so strong they can suspend a frog in mid-air? Find out about the invisible worlds all around us, from tiny germs and bacteria to gases and gravity.Hear directly from a flea, a grain of rice, an amoeba, a gas-filled balloon and loads of other first-person narrators as they guide you through