How do the five senses really work? In fact, there are many more than five, and they all work together to create our own version of reality. We dive into the stories of a pairs figure skating team, a perfumer, a cave explorer, and a musician to decipher how different ways of sensing the world all create their own vivid, and unique, picture.
This episode explores the world of human sensation and how it defines reality.

Could the source of the world’s deadliest viruses hold the secret to a healthier and longer life? Bats have a sinister reputation as potential sources for some of the deadliest disease outbreaks: Ebola, MERS, SARS, and most recently, the virus behind the COVID-19 global pandemic. Yet scientists are discovering new evidence that bats are biological marvels and may hold a key to longevity. They’re resistant to the diseases they carry and have freakishly long lifespans for their tiny size.
So, what’s their secret? And what else can we learn from their peculiar biology? From caves in Thailand and Texas to labs around the globe, the films meets the scientists who are decoding the superpowers of the bat.

The Rescue chronicles the enthralling, against-all-odds story that transfixed the world in 2018: the daring rescue of twelve boys and their coach from deep inside a flooded cave in Northern Thailand.
Using a wealth of never-before-seen material and exclusive interviews, filmmakers E. Chai Vasarhelyi and Jimmy Chin keep viewers on the edge of their seats as they bring alive one of the most perilous and extraordinary rescues in modern times, shining a light on the high-risk world of cave diving, the astounding courage and compassion of the rescuers, and the shared humanity of the international community that united to save the boys.

An Ice Age relic found in a mysterious cave is evidence of prehistoric humans' connection to the supernatural. Using cutting-edge tech, experts investigate this 40,000-year-old treasure to reveal why it was made and the long-lost myths it represents.
In the summer of 1939, a team of explorers unearthed hundred of mammoth ivory fragments within a cave in Germany. Due to the start of World War II, the explorers were forced to abandon their findings, and the fragments laid forgotten in a museum. Decades later, as archeologists began piecing the fragments together, an extraordinary artifact emerged -- a figure with both animal and human features, now known as the 'Lion man.'

The plains of Africa, home to a powerful predator where females rule: spotted hyena. They have a reputation as dim-witted scavengers. But these fierce queens are the opposite; strong, fearless and highly intelligent. Hyenas are the girl gang of the Savannah. They hunt in packs, get first bite of their prey, and outrank every male in their group, making them some of Africa's most fierce queens.

Zachary Quinto explores the unpredictable and terrifying phenomenon of sinkholes to determine just what causes them. He visits a Florida man whose brother was killed when their family home was literally swallowed whole by the Earth as well as a series of sinkholes that are forming a series of caves right below the houses of a quaint suburban neighbourhood.
Whether they be a part of some biblical prophecy or further evidence of mankind's effect on our planet, he's alarmed to discover that all the same, they can strike anywhere in the world, at any time.