"A teeter-totter is more than fun to play on, it's also a lever, one of the six simple machines. This accessible book introduces readers to the lever through real-world examples. They'll learn about simple and more complex inventions using the lever that have changed the world. Detailed pictures with thorough annotations explain important engineering concepts. Cool 'Technology in Action' spreads let readers get a close-up look at levers at work. This...

"It's a beautiful day in Deanville, and the gang is presented with a new challenge. How will the kids solve this difficult new task? And how does a Greek mathematician play an important role? Think like an engineer and read The Mighty Lever Endeavor to find out"--

What enabled us to go from simple stone tools to smartphones? How did bands of hunter-gatherers evolve into multinational empires? Readers of Sapiens will say a cognitive revolution -- a dramatic evolutionary change that altered our brains, turning primitive humans into modern ones -- caused a cultural explosion. In Transcendence, Gaia Vince argues instead that modern humans are the product of a nuanced coevolution of our genes, environment, and culture...

"Always run, never fight. Preserve the knowledge. Survive at all cost. Take them to the stars. Over 99 identical generations, Mia's family has shaped human history to push them to the stars, making brutal, wrenching choices and sacrificing countless lives. Her turn comes at the dawn of the age of rocketry. Her mission: to lure Wernher Von Braun away from the Nazi party and into the American rocket program, and secure the future of the space race....

Learn how to manage and reduce your procurement costs externally by using innovative supply-side levers. How do you hit a seemingly impossible cost reduction target, especially when you’ve already exhausted all your internal opportunities to save? Your best bet is to start looking outward so you can cut costs from the other side. In this course, join instructor Martin John as he shows you how to reduce costs externally—and save even more using...

"From the time women first used rotating bobbins to twist thread and men whirled slings around their heads to throw stones, people have found spin fascinating and baffling in equal measure. Now, in The Science of Spin, Roland Ennos shows how rotational motion dominates the workings of the world around us. It has shaped the solar system, galaxies, and black holes. It controls our climate and weather-from the pattern of trade winds through to the local...

Text and numerous detailed illustrations introduce and explain the scientific principles and workings of hundreds of machines.

"Mokoya and Akeha, the twin children of the Protector, were sold to the Grand Monastery as infants. While Mokoya developed her strange prophetic gift, Akeha was always the one who could see the strings that moved adults to action. While Mokoya received visions of what would be, Akeha realized what could be. What's more, they saw the sickness at the heart of their mother's Protectorate. A rebellion is growing. The Machinists discover new levers to...

"Co-authored by the Chief White House correspondent at The New York Times and the Washington columnist at the The New Yorker, this is a biography any would-be power broker must own: the story of legendary White House chief of staff and secretary of state James A. Baker III, the man who ran Washington when Washington ran the world. In the latter half of the twentieth century, no Republican won the presidency without his help, and the men he counseled...

"A riveting exploration of how the power of visual media over the last few years has shifted the narrative on race and reignited the push towards justice by the New York Times bestselling author of the "worthy and necessary" (The New York Times) Nobody, Marc Lamont Hill, and the bestselling author and acclaimed journalist Todd Brewster. With his signature "clear and courageous" (Cornel West) voice Marc Lamont Hill and New York Times bestselling author...