Secrets of the Dead — Season 20

Charles, Ninth Earl Spencer — best-selling author and brother to Diana, Princess of Wales — may be sitting on the greatest British archaeological find of the century. Searching Althorp, the Spencer family estate, for a medieval village, a team of British archaeologists find evidence of something far older.

An ornate ceremonial chariot was recently discovered in the ruins of Pompeii, offering insights into the lives of wealthy, high-ranking landowners who lived outside the city. Buried by the Vesuvius eruption 2,000 years ago, this is not a humble transport cart. “It's the Lamborghini of this ancient world,” says Eric Poehler, an expert on ancient infrastructure in Pompeii.

What if climate change and pandemics were the real causes of the decline of the Roman Empire? Scientists from a range of disciplines are accumulating clues to show that three successive waves of deadly epidemics and powerful temperature drops could have caused the collapse of the Empire — and draw frightening parallels to today.

The first modern translation of Egyptian hieroglyphics happened 200 years ago. How was the ancient code cracked? Today, archaeologists are busy translating hieroglyphics from an important scribe’s tomb, its walls covered from floor to ceiling with symbols thousands of years old. This new research is giving archaeologists a better understanding of life in ancient Egypt.

Recent discoveries, including funerary urns with highly decorative patterns, and technological advances like the remote sensor system known as LiDAR, are shedding new light on our understanding of pre-Columbian societies in the Amazon. Scientists speculate the rainforest was home to between 8 and 10 million people living in large, well-established communities.

Uncover the sunken remains of a 4th-century basilica in Turkey. Submerged beneath the waters of Lake Iznik for hundreds of years, the church could reveal crucial insights into the early days of Christianity. Join a team of international researchers as they travel back through time—and grapple with Turkey’s many earthquakes, which could sink the structure deeper at any moment.

Discover the world of dinosaur collecting, a controversial hobby with a booming market. Hear perspectives on the fossil trade from private collectors, paleontologists, and others, as "Big John"—the largest Triceratops fossil ever found—is assembled in Italy and auctioned in France.