Do you know your fission from your fusion? You will have heard of Einstein's theory of relativity and his synonymous equation E=mc2, but do you really understand what they mean? With renewable energy a hot topic of conversation, arm yourself with the 50 most significant theories and developments that will allow you to contribute to any debate about this integral force in the universe.30-Second Energy charts the fascinating and fundamental topics behind this phenomenon that resides in everywhere and in everything. Exploring energy as it is best understood - by example - discover how it cannot be created or destroyed, only transformed, and how plankton and other ocean-dwelling organisms can be used to power your car. From the nuclear fusion reactor at the heart of the sun to the elusive dark energy which makes up most of the content of the universe, each topic is summarized in just half a minute using no more than two pages, 300 words and one picture.