One hundred hardy souls from diverse backgrounds participate in playful experiments exploring age, sex, happiness and other aspects of being human.

1. What Makes Us Attractive? 38m An interactive element emerges to see what makes humans' sexual psyches hum. Hot dancing? Uniforms? Sperm samples will be collected.

2. The Best Age to Be Alive 38m The hosts make surprising discoveries when 20-, 30-, 40-, 50- and 60-somethings compete against each other in assembling furniture and other tests.

3. Let’s Talk About Sex 37m The battle of the sexes goes under a microscope as the participants disprove multiple myths and confirm others. The experts examine the results.

4. Are You Biased? 39m Ingrained bias sneaks in, prompting subjects to judge others by their accents, fire toy guns at innocent bystanders and underrate their own peers.

5. Pain vs. Pleasure 41m Humans weigh pleasurable prizes against painful penalties as the hosts explore the many ways negative and positive elements shape our reality.

6. How to Be Happy 32m The subjects pursue joy through crafts and catastrophes, partying and watching paint dry. Time flies when they’re having fun, except when it doesn't.

7. Can You Trust Your Senses? 36m Go with your gut? Not always. The hosts learn how noses, eyes and even taste buds are impacted by context and external forces like music — and mimes.