The Principia: The Authoritative Translation: Mathematical Principles of Natural Philosophy History_Gift_Guide husband-and-wife team Nate and Kaley

husband-and-wife team Nate and Kaley Klemp pinpoint exactly what's not working in modern marriage

a compellingly written and boldly revisionist account of a war that reshaped the American military and the globe and continues to resonate today

The phenomenally successful Bad Kitty series is purr-fect for fans of Dav Pilkey's Dog Man and John Patrick Green's InvestiGators series

along with notes on their importance to the world—the perfect gift for Tolkien enthusiasts

but instead of the idyllic life she imagined with her true love

The Principia: The Authoritative Translation: Mathematical Principles of Natural Philosophy History_Gift_Guide husband-and-wife team Nate and KaleyIn his monumental 1687 work, Philosophiae Naturalis Principia Mathematica, known familiarly as the Principia, Isaac Newton laid out in mathematical terms the principles of time, force, and motion that have guided the development of modern physical science. Even after more than three centuries and the revolutions of Einsteinian relativity and quantum mechanics, Newtonian physics continues to account for many of the phenomena of the observed world, and