Original Air Date:
December 30, 2011

Brought to you By:
N and 15

Educational Goal:
Science

Word on the street: Deciduous
When a tree loses its leaves once a year.

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Episode Summary

Whoosh! It's a windy autumn day and Stinky is calling from under a pile of leaves. Chris, Elmo, and Rosita dig him out, then Rosita begins to problem-solve, trying to figure out which tree the leaves are from. They compare a leaf from the pile with leaves on surrounding trees.

The leaf detectives finally find a match. Leela and Chris explain that the tree is deciduous (losing its leaves every fall and growing them back every spring). Stinky doesn't want to move, so they brainstorm ways to protect him from the falling leaves.

Elmo and Rosita try an umbrella and a big clear bowl, then finally find a solution that lets sunlight and rain through: mosquito netting. What good friends Stinky has!

Also in This Episode

Special guest star Ken Jeong explains deciduous. Plus, in Bert and Ernie's Great Adventures, there's a frog race, and in Abby's Flying Fairy School, it's opposite day! Finally, Murray experiments with twirlers, and Elmo's World is all about weather.