In Episodes 4 and 5, you can see how the most universal human desire—to bring new life into the world—collides with science, culture, and the limits of our own biology. From groundbreaking fertility treatments that promise hope to countless families, to the hidden struggles behind why so many people still can’t conceive, these episodes reveal the fascinating and often heartbreaking reality of reproduction today. You’ll also witness the raw, unfiltered experience of itself: the intense pain, the unexpected complications, and the inspiring ways doctors and parents try to make this incredible ordeal safer and more humane.

Explore the science of attraction, the evolution of reproductive health, and the cultural taboos that shape our most private experiences. This illuminating series unpacks how desire begins in the brain, how birth control has transformed society, and why sex remains one of humanity’s most captivating mysteries.
The first three episodes reveal how most sexual fantasies can be traced back to just a few provocative themes, and delve into the surprising science behind why we’re irresistibly drawn to certain types of partners. You’ll also discover the hidden factors that spark desire, and follow the long, often frustrating quest to control reproduction—from ancient herbal remedies to modern pills and IUDs—and why birth control remains such a complicated challenge even today.

Boy or girl? It’s the eternal question. But that question may have more than two answers. Science reveals the line between male and female is blurred. And the battle of the sexes is happening deep within our cells. Are there more than two sexes?

Journalist and Youtuber Benjamin Cook hosts everyday people discussing a variety of attitudes towards sex. Tofu offers a 'honest, non-judgemental and entertaining view of sex and sexuality'

Richard Dawkins explores what science can tell us about death. It's a journey that takes him from Hindu funeral pyres in India to genetics labs in New York.Dawkins brings together the latest neuroscience, evolutionary and genetic theory to examine why we crave life after death, why we evolved to age and how the human genome is something like real immortality - traits inherited from our distant ancestors that we pass on to future generations.