DK was founded in London in 1974 and is now the world's leading illustrated reference publisher and part of Penguin Random House, formed on July 1, 2013. DK publishes highly visual, photographic nonfiction for adults and children. DK produces content for consumers in over 87 countries and in 62 languages, with offices in Delhi, London, Melbourne, Munich, New York, and Toronto. DK's aim is to inform, enrich, and entertain readers of all ages, and everything DK publishes, whether print or digital, embodies the unique DK design approach. DK brings unrivalled clarity to a wide range of topics with a unique combination of words and pictures, put together to spectacular effect. We have a reputation for innovation in design for both print and digital products.   Our adult range spans travel, including the award-winning DK Eyewitness Travel Guides, history, science, nature, sport, gardening, cookery, and parenting. DK’s extensive children’s list showcases a fantastic store of information for children, toddlers, and babies. DK covers everything from animals and the human body, to homework help and craft activities, together with an impressive list of licensing titles, including the bestselling LEGO® books. DK acts as the parent company for Alpha Books, publisher of the Idiot's Guides series and Prima Games, video gaming publishers, as well as the award-winning travel publisher, Rough Guides.

"The history of humankind has been driven by scientific discovery. From our distant ancestors learning to use tools and fire for the first time, to the modern breakthroughs that have shaped the world we live in today, science has defined the story of humans for thousands of years. Using beautiful illustrations and clear, easy-to-read text, SI Timelines of Science explains the history of science as it unfolded across the globe, and delves into the story of scientific ideas, practice, and progress one step at a time"--