Episodes
Trace human development from embryo to newborn through stunning microimagery.
Combining the laws of the universe in one theory that explains it all is the Holy Grail
Do miniscule vibrating strands of energy hold the key to a unified theory of physics?
Will experimental particle physics confirm the wild predictions of string theory?
The story of how African-American Percy Julian defied the odds to become a famous chemist.
We are on the verge of answering one of the greatest questions in history: Are we alone?
It defines our lives, but what is time really? Have a look into its true nature.
Take a wild ride into the quantum realm, where even the impossible seems possible.
Is our universe unique, or could it be just one in an endless "multiverse"?
Australia’s landscape holds clues to Earth's early history and the beginning of life.
Fossils reveal how life’s explosion in the ocean was recreated on dry land.
Extras
New evidence sheds light on the remarkable life—and mysterious collapse—of the ancient jungle city.
What if violent asteroid impacts actually jump-started life on Earth? Explore a dramatic theory.
Adam Riess takes us inside the discovery of dark energy.
Early humans may have brought offerings to this enormous stone snake.
In a remote cave, in North West Africa, a chance discovery uncovered some mysterious human remains.
These monkey bones showed that early humans could thrive in the rainforest.
Ancient bones reveal that early Homo sapiens and Neanderthals didn’t just coexist.
Inside the Tunnel of Bones, a macabre Neanderthal mystery unfolds.
This form of bear hunting took nerves of steel.
A small piece of insulation caused catastrophic damage.