Trainstation

Kyoshi’s place as the true Avatar has finally been cemented - but at a heavy cost. With her mentors gone, Kyoshi voyages across the Four Nations, struggling to keep the peace. But while her reputation grows, a mysterious threat emerges from the Spirit World. To stop it, Kyoshi, Rangi, and their reluctant allies must join forces before the Four Nations are destroyed irreparably. This thrilling follow-up continues Kyoshi’s journey from a girl of humble origins to the merciless pursuer of justice still feared and admired centuries after becoming the Avatar.

From the best-selling author of Seven Brief Lessons on Physics comes a new audiobook about the mind-bending nature of the universe. What are time and space made of? Where does matter come from? And what exactly is reality? Scientist Carlo Rovelli has spent his whole life exploring these questions and pushing the boundaries of what we know. Here he explains how our image of the world has changed throughout centuries.

This playful, entertaining, and mind-bending introduction to modern physics briskly explains Einstein's general relativity, quantum mechanics, elementary particles, gravity, black holes, the complex architecture of the Universe, and the role humans play in this weird and wonderful world. Carlo Rovelli, a renowned theoretical physicist, is a delightfully poetic and philosophical scientific guide. He takes us to the frontiers of our knowledge: To the most minute reaches of the fabric of space, back to the origins of the cosmos, and into the workings of our minds.