Resolving the debate of nature versus nurture, three scientists show how genetics and environment work together as infants discover who they are.
Researchers reveal the social skills that toddlers naturally possess, abilities that ultimately separate humans from all other species.
In a desperate attempt to avoid going to Charlotte's bassoon performance, Coop, Cami and Fred come up with an elaborate scheme that involves them crashing a wedding.
Gil wants to be a ninja, but his ninja teacher just keeps giving him random tasks to do; frustrated, Gil is about to give up when another ninja challenges him, and he realizes he's been learning ninja skills all along.
Three teams — the Mama's Boys, Triple Threat and the Edutainers — enter a lava-swept planetarium. Only one will emerge the victor.
In this episode, teachers, tennis pals and proud papas take leaps of faith across a magma-filled obstacle course designed to look like a bedroom.
A mom and her college-bound twins, three pastors and identical triplets use a mummy, an ark and assorted antiquities to traverse a flooded basement.
We need a giant stick of mozzarella stat! Doctors, nurses and party animals do culinary calisthenics in a kitchen like no other.
Flight attendants, fiancés and fierce ladies leap across couches, swing from cargo nets and find time to contemplate an abominable yeti.
Two teams of lava-leaping maniacs go head-to-head in the kitchen, where one false move can send even the fiercest competitor to an unpleasant exit.
Things bottom out on the basement level when a team of brawny bros takes on a trio of co-workers who met on the job.
A fresh crop of victims, er, players take on the planetarium level, where the Earth really is flat and giant red buttons are sometimes best avoided.
There's no rest for the wicked as three tenacious teams of two compete to survive a perilous journey across a booby-trapped and lava-filled bedroom.
In the season finale, host Rutledge Wood welcomes three new teams — including a trio of social media mavens — to the hottest party in town.
The summer team tries to find clues of what could have happened during the winter, unveiling a first possible suspect.
In the past, Dae-Hyun is a good looking, down-on-his luck man whose girlfriend has just broken up with him while Saet-Byul is a strong, charismatic schoolgirl who is good at fighting.
Boy, Girl and Cheese learn that their animal siblings have a tough time with their tails and want to understand what it's like. So Mouse builds them mechanical tales to wear.
After her siblings accidentally insult her dreams of being a pop star, Cheese is bonked on the head and starts to believe she's a huge celebrity!