Ada's so worried about making the perfect prototype that she can't stop sleep-working.

The Science Scouts build a hotel to bring bees back to the park. 

Ada hopes muscle memory can help her ace her dance moves for an upcoming recital.

Laughter's the best medicine... but is it contagious? 

The team tests different materials to keep Lil' Liz and her terrarium warm.

A creeped-out Iggy's convinced there's a ghost in his basement. 

The kids use their heads — and noses — to keep Ada's pet spider out of the house.

Ada tries to get her parents' old roller skates back into shape. 

Tents are on the agenda when the Twists take everyone camping.

Iggy designs a bridge to help a stranded Arthur cross the creek for Free Ice Cream Day. 

The friends learn all about thunderstorms to help Rosie feel less afraid of them.

Ada builds a DadBot to make Mom's life easier around the house. 

To get glitter off the rug, the team turns a negative into a positive.

Ada and Rosie make a public speaking potion to help boost Iggy's confidence. 

The gang reinvents a toy for Ada's cousin, who has autism.

Rosie wants to win the Raucous Riveters Reunion Race — but something's wrong with her car!