For millennia, Indigenous peoples in North America have practiced a unique form of science. From navigating the featureless Arctic to building energy-efficient homes in the desert, see how cultural traditions have led to remarkable innovations.

For millennia, Indigenous peoples in North America have practiced a unique form of science. From navigating the featureless Arctic to building energy-efficient homes in the desert, see how cultural traditions have led to remarkable innovations.

Hidden in the gorges of Southern France lies one of the most stunning decorated caves ever discovered: Chauvet, 'the Sistine Chapel of Paleolithic art.' For thousands of years, this geological wonder was visited only by animals. But around 37,000 years ago people arrived, and some covered its walls with drawings of exceptional beauty. Since its re-discovery in 1994, only a few scientists have been granted access to study it. Now, NOVA's cameras are there as scientists return to the cave searching for new clues about the people who came here - and what moved them to leave such haunting images.

Hidden in the gorges of Southern France lies one of the most stunning decorated caves ever discovered: Chauvet, 'the Sistine Chapel of Paleolithic art.' For thousands of years, this geological wonder was visited only by animals. But around 37,000 years ago people arrived, and some covered its walls with drawings of exceptional beauty. Since its re-discovery in 1994, only a few scientists have been granted access to study it. Now, NOVA's cameras are there as scientists return to the cave searching for new clues about the people who came here - and what moved them to leave such haunting images.

Hidden in the gorges of Southern France lies one of the most stunning decorated caves ever discovered: Chauvet, 'the Sistine Chapel of Paleolithic art.' For thousands of years, this geological wonder was visited only by animals. But around 37,000 years ago people arrived, and some covered its walls with drawings of exceptional beauty. Since its re-discovery in 1994, only a few scientists have been granted access to study it. Now, NOVA's cameras are there as scientists return to the cave searching for new clues about the people who came here - and what moved them to leave such haunting images.

A high-stakes war is silently escalating above our heads. Once purely a realm of scientific wonder, space is now a critical battleground, as global military powers race to weaponize it. Satellites, vital to our daily lives and economies, are vulnerable to attack both from adversaries and the debris that's filling increasingly crowded orbits. Explore the technology and strategy of a rapidly developing arms race and hear how experts are wrestling with the implications of this looming conflict.

A high-stakes war is silently escalating above our heads. Once purely a realm of scientific wonder, space is now a critical battleground, as global military powers race to weaponize it. Satellites, vital to our daily lives and economies, are vulnerable to attack both from adversaries and the debris that's filling increasingly crowded orbits. Explore the technology and strategy of a rapidly developing arms race and hear how experts are wrestling with the implications of this looming conflict.

A high-stakes war is silently escalating above our heads. Once purely a realm of scientific wonder, space is now a critical battleground, as global military powers race to weaponize it. Satellites, vital to our daily lives and economies, are vulnerable to attack both from adversaries and the debris that's filling increasingly crowded orbits. Explore the technology and strategy of a rapidly developing arms race and hear how experts are wrestling with the implications of this looming conflict.

Intelligence is the defining trait of our species. Discover how our sophisticated human brains - and those of our clever animal cousins like the dolphin - evolved from the time when our ancestors were tiny senseless sea creatures.

Intelligence is the defining trait of our species. Discover how our sophisticated human brains - and those of our clever animal cousins like the dolphin - evolved from the time when our ancestors were tiny senseless sea creatures.

Intelligence is the defining trait of our species. Discover how our sophisticated human brains - and those of our clever animal cousins like the dolphin - evolved from the time when our ancestors were tiny senseless sea creatures.

The relentless pursuit of energy, the very act of eating, has profoundly shaped life on Earth. Discover the surprising story of how our planet's diverse creatures became the furious feeding machines they are today, one mutation at a time.

The relentless pursuit of energy, the very act of eating, has profoundly shaped life on Earth. Discover the surprising story of how our planet's diverse creatures became the furious feeding machines they are today, one mutation at a time.

The relentless pursuit of energy, the very act of eating, has profoundly shaped life on Earth. Discover the surprising story of how our planet's diverse creatures became the furious feeding machines they are today, one mutation at a time.

From the first time two cells stuck together, evolution has been crafting new bodie -biological machines then put to the test by Earth's ever-changing environments. Discover the process behind the incredible variety of animal shapes and sizes.

From the first time two cells stuck together, evolution has been crafting new bodie -biological machines then put to the test by Earth's ever-changing environments. Discover the process behind the incredible variety of animal shapes and sizes.

Journey to Florence to discover how Leonardo da Vinci used science, from human dissections to innovative painting techniques, to create his legendary artwork. Learn why Mona Lisa's smile is so captivating - and what it took to create it.

Imagine a world where your furry best friend could tell you exactly what they're thinking. A growing number of dog owners claim this is already happening, thanks to innovative word buttons that seem to unlock a new realm of canine communication. But are these dogs truly understanding what we're saying - and talking back Are they really thinking creatively, applying words in new contexts Or is this just clever conditioning To find out, scientists are conducting the largest animal communication study in history, analyzing millions of button presses from thousands of dogs worldwide. Witness astonishing moments that challenge our assumptions about animal intelligence, from dogs that seemingly engage in conversations to those who learn new words with incredible speed. Prepare to question everything you thought you knew about the minds of dogs and discover just how far their linguistic abilities might stretch.

High on a mountaintop in northern Chile, a remarkable new eye on the sky is poised to transform our understanding of the universe. The groundbreaking Vera Rubin Observatory, featuring massive mirrors and the largest digital camera on Earth, will collect more data in its first year than all previous optical telescopes combined. Witness the tense moments of its first light and the triumphs of scientists as they strive to answer humanity's biggest questions, from identifying threatening asteroids in our Solar System to the very origins and ultimate fate of our universe. Prepare to see the cosmos as never before.

During restoration work after the devastating 2019 fire at Notre Dame de Paris, two lead sarcophaguses were discovered under the cathedral's stone floor. Who is buried in the anonymous sarcophaguses? And what secrets will these lead caskets reveal? Follow a team of archaeologists and historians as they attempt to solve centuries-old mysteries using the latest scientific investigation techniques. What can DNA and chemical analysis of the remains reveal about the history of Notre Dame and those who devoted their lives to it?

The ancient Maya built large complex cities with towering pyramids and temples that served as centers for a thriving civilization. Follow archaeologists exploring new evidence into the mystery of why after hundreds of years the cities were abandoned.