In this groundbreaking new work, Professor Hawking and renowned science writer Leonard Mlodinow have drawn on 40 years of Hawking's own research and a recent series of extraordinary astronomical observations and theoretical breakthroughs to reveal an original and controversial theory.

Was there a beginning of time? Could time run backwards? Is the universe infinite, or does it have boundaries? These are just some of the questions considered in an internationally acclaimed masterpiece by one of the world's greatest thinkers. It begins by reviewing the great theories of the cosmos, from Newton to Einstein, before delving into the secrets which still lie at the heart of space and time, from the big bang to black holes, via spiral galaxies and strong theory.

The final book from Professor Stephen Hawking, the best-selling author of A Brief History of Time and arguably the most famous scientist of our age, Brief Answers to the Big Questions is a profound, accessible and timely reflection on the biggest questions in science. Professor Hawking was a brilliant theoretical physicist, an influential author and thinker and a great popular communicator. Throughout his career he was asked questions by business leaders, politicians, entrepreneurs, academics and the general public on a broad range of subjects, from the origins of the universe to the future of the planet.

Cosmos is one of the best-selling science books of all time. In clear-eyed prose, Sagan reveals a jewel-like blue world inhabited by a life form that is just beginning to discover its own identity and to venture into the vast ocean of space.

In Cosmos, the late astronomer Carl Sagan cast his gaze over the magnificent mystery of the Universe and made it accessible to millions of people around the world. Now in this stunning sequel, Carl Sagan completes his revolutionary journey through space and time.

Seeking to uncover the holy grail of science, the elusive Theory of Everything that lies at the heart of the cosmos, Professor Stephen Hawking takes us to the cutting edge of theoretical physics. In a realm where truth is often stranger than fiction, he explains in layman's terms the principles that control our universe.

Few entrepreneurs can claim to have radically changed the way we live, and Ray Kroc is one of them. His revolutions in food-service automation, franchising, shared national training, and advertising have earned him a place beside the men and women who have founded not only businesses, but entire empires. But even more interesting than Ray Kroc the business man is Ray Kroc the man. Not your typical self-made tycoon, Kroc was 52 years old when he opened his first franchise.  

Should we believe in God? Do we need God in order to explain the existence of the universe? Do we need God in order to be good? In 12 chapters that address some of the most profound questions human beings confront, Dawkins marshals science, philosophy and comparative religion to interrogate the hypocrisies of all the religious systems and explain to listeners of all ages how life emerged without a Creator, how evolution works and how our world came into being.

Stephen Hawking's worldwide best seller, A Brief History of Time, has been a landmark volume in scientific writing. Its author's engaging voice is one reason, and the compelling subjects he addresses is another: the nature of space and time, the role of God in creation, and the history and future of the universe.

In one of the most exciting and accessible explanations of The Theory of Relativity in recent years, Professors Brian Cox and Jeff Forshaw go on a journey to the frontier of 21st century science to consider the real meaning behind the iconic sequence of symbols that make up Einstein's most famous equation, exploring the principles of physics through everyday life.

What is the nature of space and time? How do we fit within the universe? How does the universe fit within us? There's no better guide through these mind-expanding questions than acclaimed astrophysicist and best-selling author Neil deGrasse Tyson. But today, few of us have time to contemplate the cosmos. So Tyson brings the universe down to Earth succinctly and clearly, with sparkling wit, in digestible chapters consumable anytime and anywhere in your busy day.

"It doesn't take an Einstein to understand modern physics," says Professor Wolfson at the outset of these 24 lectures on what may be the most important subjects in the universe: relativity and quantum physics. Both have reputations for complexity. But the basic ideas behind them are, in fact, simple and comprehensible by anyone. These dynamic and illuminating lectures begin with a brief overview of theories of physical reality starting with Aristotle and culminating in Newtonian or "classical" physics.

Internationally renowned, award-winning theoretical physicist, New York Times bestselling author of A Universe from Nothing, and passionate advocate for reason, Lawrence Krauss tells the dramatic story of the discovery of the hidden world of reality - a grand poetic vision of nature - and how we find our place within it.

Time is a mystery that does not cease to puzzle us. Philosophers, artists and poets have long explored its meaning while scientists have found that its structure is different from the simple intuition we have of it. From Boltzmann to quantum theory, from Einstein to loop quantum gravity, our understanding of time has been undergoing radical transformations. Time flows at a different speed in different places, the past and the future differ far less than we might think, and the very notion of the present evaporates in the vast universe.

Nothing has had a more profound impact on the development of modern civilization than thermodynamics. Thermodynamic processes are at the heart of everything that involves heat, energy, and work, making an understanding of the subject indispensable for careers in engineering, physical science, biology, meteorology, and even nutrition and culinary arts. Get an in-depth tour of this vital and fascinating science in 24 enthralling lectures suitable for everyone from science novices to experts who wish to review elementary concepts and formulas.