Charlie, a six-year-old boy with tousled hair and a determined expression, grips the handlebars of his shiny new bike. His mother, Mom, watches with gentle encouragement, while his little sister, Lila, toddles in the grass hugging a stuffed bunny. "Mom, I want to ride all the way to the big tree!"

"You're doing great, Charlie! Just keep looking ahead and pedal steady," Mom calls out, her voice bright. Charlie grins, cheeks flushed with effort, but soon he slows to a stop, breathless and wiping sweat from his brow.

"That was hard work! Can I have more juice, please?" Charlie says, swinging his legs. In the distance, a teenage boy glides past on a single-wheeled cycle, arms spread for balance.

"Mom, is that boy's bicycle broken? It only has one wheel!" Mom smiles, kneeling to his height. "That's actually called a unicycle. 'Uni' means one. Your bike is a bicycle—'bi' means two, see? And remember your old tricycle? 'Tri' means three. 'Cycle' means to go around, like the wheels turning," she explains, drawing circles in the air with her finger. Lila giggles, mimicking her mother.

"Wait, Charlie! That bottle goes in this bin—the one with the three arrows. See? That's for recycling," she says, pointing to the symbol. Charlie peers at the sign, brow furrowed. "But how many is 're', Mom?"

"'Re' means 'again,' Charlie. When you recycle this bottle, it goes around again—maybe it will become a new bottle, or a can, so we don't have to bury it in the ground," she explains softly. "If we just throw things away, they go to a landfill, which is a big place where trash gets buried, and that can hurt our Earth. But when we recycle, we help our Earth home stay clean and happy." Charlie nods, understanding dawning in his eyes as he drops the bottle into the recycling bin, watching the arrows spin in his imagination.