
NOVA — Season 49

The Arctic holds a growing peril for the climate: vast quantities of methane, a powerful greenhouse gas, are escaping into the atmosphere.

Scott Burnett is known as “Scatman,” an Australian ecologist who investigates the hidden stories within animal droppings. Through the careful analysis of animal scat—identifying DNA and hormones—he unlocks crucial insights into their behavi…

In southern England, a remarkable discovery has captivated the attention of Sir David Attenborough. Here, amateur fossil hunters unearthed the colossal bones of mammoths alongside compelling evidence of Neanderthal presence. A team of paleo…

The story of Hugh Herr is one of profound transformation. A biophysicist, he dedicates his life to the ambitious pursuit of brain-controlled robotic limbs. At seventeen, a climbing accident cost him his legs. Dissatisfied with the inadequat…

Three women, each carrying the shadow of potential Alzheimer's, embark on a pioneering study with the fervent hope of averting the disease's cruel advance. Their journey is one of shared vulnerability, navigating the emotional complexities …

Deep within the North Dakota Badlands, a team of scientists believes they have unearthed fossilized remains of creatures perished on the day of the asteroid impact that reshaped Earth 66 million years ago. The discoveries strongly suggest a…

The second installment of this two-part series follows the ongoing quest to understand the cataclysmic event that marked the end of the dinosaurs. Researchers have unearthed exceptionally rare fossils, along with further evidence suggesting…

On March 23, 2021, the bow of the enormous container ship Ever Given slammed into the Suez Canal bank, bringing global supply chains to a standstill. The question arose: what had gone amiss? The ensuing drama of freeing the vessel, and the …

Across the vast expanse of New Mexico’s White Sands National Park, a multitude of ancient footprints extend for miles, preserving fleeting moments of encounter between Ice Age humans and creatures now lost to time – mammoths and colossal gr…

What ingenuity and daring propelled NASA's engineers to construct and launch the most ambitious telescope ever conceived? This is the compelling narrative of the James Webb Space Telescope—a machine of unparalleled complexity, destined for …

Venice faces an existential threat: rising sea levels and land subsidence imperil its very existence. Can the city's newly implemented high-tech flood defenses offer salvation? Explore the inventive projects and remarkable feats of engineer…

Nearly four decades after the identification of HIV, is the United States finally poised to overcome the AIDS epidemic? How did researchers confront one of humanity's most persistent and lethal viruses? Will novel therapies ultimately eradi…

Across the nation, law enforcement agencies and judicial systems are increasingly employing artificial intelligence to inform decisions about policing, bail, sentencing, and parole. Yet, does this technology truly advance fairness and justi…

For millennia, hallucinogenic drugs—commonly known as psychedelics—have held a place in human societies. Now, researchers are revisiting these mind-altering substances, both those derived from nature and those created synthetically, and unc…

Once popular as aquarium pets, lionfish have now established themselves as one of the ocean's most pervasive invaders, spreading ecological disruption across the globe. Explore this phenomenon with ocean explorer Danni Washington, as she in…

The Nazca Lines, a profound mystery of the ancient world, consist of a vast network of lines, intricate geometric figures, and depictions of animals, all etched into the Peruvian desert over an area of two hundred square miles. The question…

Cryptocurrency, from Bitcoin to the burgeoning world of NFTs, has become a frequent topic of discussion. Yet, its fundamental nature and operational mechanics remain largely obscure. Beyond the prevailing enthusiasm and doubt, specialists a…

The advent of zero and infinity fundamentally reshaped the landscape of mathematics.

In April of 2019, the world witnessed the near destruction of Paris's beloved Notre Dame Cathedral by a devastating fire. This account offers a glimpse behind the scenes, following a dedicated team of engineers, masons, and timber workers a…


