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An interactive element emerges to see what makes humans' sexual psyches hum. Hot dancing? Uniforms? Sperm samples will be collected.

The hosts make surprising discoveries when 20-, 30-, 40-, 50- and 60-somethings compete against each other in assembling furniture and other tests.

The battle of the sexes goes under a microscope as the participants disprove multiple myths and confirm others. The experts examine the results.

Ingrained bias sneaks in, prompting subjects to judge others by their accents, fire toy guns at innocent bystanders and underrate their own peers.

Humans weigh pleasurable prizes against painful penalties as the hosts explore the many ways negative and positive elements shape our reality.

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.

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.

Time for the big questions, as chosen by the humans themselves. How common are heroes? Do names matter? Above all, what’s proper toilet etiquette?