The last episode explores Mescaline, the psychoactive molecule in San Pedro and peyote cacti, a sacred medicine that Native Americans have had to fight for the right to use. At the Indigenous practices there's always an elder, someone who knows the territory very well, who's presiding. There's usually a group, a community is involved, There's always an intention, a purpose to what you're doing, and you're treating it as sacred, in order to achieve altered states of consciousness, which contribute to worship in various ways, or celebration or healing.
But maybe all this is not so new to Western culture after all. In the old Greek histories of Eleusis, people who were initiated there got the drink, the kykeon, and then they had the illumination. The precise recipe is a mystery, but we know that the kykeon was a psychoactive brew that was used at the Eleusinian mysteries, a sacred annual ritual of enlightenment practiced by some of the world's greatest minds including Socrates, Plato, and Aristotle. So why did this ritual come to an end more than 1,000 years ago? Was the possibility of illumination or achieving a higher consciousness considered threatening to the powers that be? Have the drug wars been merely an extension of that fear?
Psychedelics has a major part in how we can heal as a community, how we can heal as a city, and how we can heal as a country. The current renaissance of psychedelics could not come at a better time as the world confronts a crisis in mental health. But psychedelics have much to offer. The psychedelic experience changes the mind in ways that will help scientists better understand how it works. All these altered states allow us to probe what is the greatest mystery in all of nature. The emergence from mere matter of something as miraculous as consciousness. But an even bigger question is whether psychedelics might help us address the environmental crisis of how we think about our place in nature. One of the greatest gifts of psychedelics is how they reanimate the natural world, allowing us to perceive the subject, the spirit of all species, not just our own. And to feel a deeper sense of interconnectedness with nature.

A third of the population regularly struggle with our sleep, which rose to one in two during the pandemic - the highest it's ever been. However, as more and more people seek help, an explosion in sleep science is enabling the study of sleep in ways not possible before. What's more, recent breakthroughs are uncovering what's happening in our brains and bodies while we're asleep, getting us closer than ever to understanding the importance of sleep for our health. Michael Mosley shows why cutting our sleep short can be linked to a host of illnesses, including serious diseases like Alzheimer's.
Revealing the very latest science breakthroughs and packed with personal anecdotes, this programme is a useful guide to anyone looking for tips and insights on how to get the benefits from learning how to sleep well.

This featured film investigates the emerging threats posed by plastic pollution to life on Earth. The hyper-convenience of our modern way of living produces staggering volumes of plastic waste daily. Scientists now know that this waste breaks down into ever tinier pieces, spreading right across the globe and posing direct health risks, including through bioamplification of toxic additives moving up the food chain. We explore the drastic changes it will take to deliver a sustainable future for our planet.

Using state-of-the-art equipment, a group of activists, led by renowned dolphin trainer Ric O'Barry, infiltrate a cove near Taijii, Japan to expose both a shocking instance of animal abuse and a serious threat to human health". The Taiji dolphin drive hunt is a dolphin drive hunt that takes place in Taiji, Wakayama in Japan every year from September to March. According to the Japanese Fisheries Research Agency, 1,623 dolphins were caught in Wakayama Prefecture in 2007 for human consumption or resale to dolphinariums, and most of these were caught at Taiji. The annual dolphin hunt provides income for local residents, but has received international criticism for both the cruelty of the dolphin killing and the high mercury levels of the dolphin meat

Frontline and service workers have borne the health consequences of the pandemic, increasing racial and economic disparities. Certain robotic and AI applications are accelerating as the value of human workers is further questioned. Determining the likely areas of job growth and training needs is difficult. Post-secondary education has become more virtual and its costs, more controversial. How can we predict job growth, training needs and the role of education in order to prepare for the work of the future?

From crunchy crickets to nutty fly grubs, the film takes a tasty look at insect foods and how they could benefit our health and our warming planet. From Thailand to Texas, insect farmers are showing how the tiny critters stack up as an environmentally friendly alternative to beef protein and can, pound for pound, deliver better nutritional value than the finest steak. But will western people overcome the 'ick' factor and share the appetite of many cultures around the world for insect feasts?