"The Biodiversity Heritage Library (BHL) is a consortium of 12 natural history and botanical libraries that cooperate to digitize and make accessible the legacy literature of biodiversity held in their collections and to make that literature available for open access and responsible use as a part of a global "biodiversity commons." "
"A free ebook in six colour pdf files on physics, the science of motion.
Explore the motion of muscles, animals, stones, lightning, stars, light and empty space itself!
Be fascinated by the beauty of nature and the concepts of modern physics, from the principle of cosmic lazyness - least action - to gauge symmetry! Browse it here."