“The Big & The Small” dramatizes the fact that humans are almost exactly the same distance—in terms of powers of ten—between an atom and a star. But where do we fit in the moral universe? Alan Lightman speaks with an advanced android and then a rabbi, a bio-ethicist, and the Dalai Lama about whether such a being could achieve consciousness and whether we could unplug her without asking permission.

“The Stars & The Osprey” begins with Lightman's late-night experience alone on the ocean when he felt connected to the stars and ends with a memorable eye-to-eye encounter with a wild creature. Alan attempts to reconcile these transcendent experiences with the material world of atoms and molecules. Can science explain such experiences in terms of the brain? Are we humans nothing but matter?

This film marks the 100th anniversary of the discovery of King Tutankhamun's tomb and is a journey of exploration for Egyptian co-hosts Yasmin El Shazly and Mahmoud Rashad into the mysteries and unanswered questions about the boy king's life, his infamous father’s religious revolution, and those advising him as he takes the throne in one of the most tumultuous periods of Egyptian history.

NOVA: Zero to Infinity takes a look at how the mathematical concepts of zero and infinity have been invented and re-invented by different cultures over thousands of years.

NOVA presents the dramatic story of NASA’s James Webb Space Telescope and the quest to peer deeper back in time than ever before in the hope of answering some of astronomy’s biggest questions.

Dogs have long been dependable companions by our sides. But it wasn't always that way.  A look at their closest living relative, the wolf, makes it clear why. Researchers reveal how humans tamed fearsome canines over tens of thousands of years, and how modern dog intelligence and behaviors have made them indispensable companions.

Follow the dramatic personal journey of Hugh Herr, a biophysicist working to create brain-controlled robotic limbs. At age 17, Herr’s legs were amputated after a climbing accident. Frustrated by the crude prosthetic limbs he was given, Herr set out to remedy their design, leading him to a career as an inventor of innovative prosthetic devices.

A team of intrepid paleontologists discovers that dinosaurs thrived in the unlikeliest of places—the cold and dark of winter in the Arctic Circle. How did they survive year-round and raise their young in frigid and dark winter conditions?

The hidden scientific secrets of butterflies reveal them to be more inventive and resilient than we ever imagined. Follow their extraordinary life cycle and migrations to tropical rainforests, windswept prairies, and even inside a chrysalis as it’s being spun.

Stunning new archaeological evidence provides clues about the Egyptians who built the Great Pyramid of Giza–and how they did it. Join researchers as they delve into the logbook of a work crew and discover how the massive project transformed Egypt.