Not only can we not currently explain the origin of the universe, it is questionable we will ever be able to explain it. The notion that there are universes within particles, or that particles are conscious, is ascientific, as is the hypothesis that our universe is a computer simulation. On the other hand, the idea that the universe itself is conscious is difficult to rule out entirely. 

In a field known for startling ideas, the Many-Worlds Interpretation (MWI) of quantum mechanics may take the prize. It holds that parallel to our own world are a large number of other universes, almost identical to ours but with small variations. Copies of each of us inhabit a myriad of these worlds. But they are not us exactly; they share our past history, but they are different people who have unique futures. Although these realms are invisible and can’t communicate with each other, prominent physicists are convinced they must exist.

Three of the most important words in science are I don't know. Not knowing implies a universe of opportunities—the possibility of discovery and surprise. Our understanding of science has advanced immeasurably over the last 500 years, yet many fundamental mysteries of existence persist: How did our universe begin? How big is the universe? Is time travel possible? What’s at the center of a black hole? How did life on Earth arise? Are we alone? What is consciousness, and can we create it?

Cognitive scientist Professor Steven Pinker has spent his life thinking about thinking, and now he wants us to join him. With the aid of his critical thinking toolkit, he hopes to help us make smarter choices, become more rational, gain a greater understanding of the confused world we live in—and maybe even become better citizens. In this fascinating series, produced in partnership with the Open University, he examines the different ways the human brain can be tripped up, from understanding probability to the difference between correlation and causation. 

Hans Castorp is, on the face of it, an ordinary man in his early 20s, on course to start a career in ship engineering in his home town of Hamburg, when he decides to travel to the Berghof Santatorium in Davos. The year is 1912 and an oblivious world is on the brink of war. Castorp’s friend Joachim Ziemssen is taking the cure and a three-week visit seems a perfect break before work begins. But when Castorp arrives he is surprised to find an established community of patients, and little by little, he gets drawn into the closeted life and the individual personalities of the residents.