Brewster, Maggie and the twins find a toy dinosaur. They wonder ‘Why don’t we see real dinosaurs?’ Brewster takes them to meet Dino-Biggles who describes how long ago the weather changed and the dinosaurs couldn’t survive in it, so became extinct.
Brewster slips on a globe and Hamish wonders “Why does the world look flat?’ The friends become astronauts and talk to the moon. He tells them that because they are so small compared to the earth that it looks flat to them.
Brandon discovers a bee and asks Maggie and Brewster ‘Why do Bees make a buzzing sound when they fly?’ They head straight to the beehive where the meet the Queen Bee who explains her wings flap really fast and that’s what makes the sound.
Mosquitoes are biting Maggie when Helvetica Frog asks ‘Why do mosquitoes bite people?’ Brewster shrinks them down to mosquito size and they meet Bubba Buzzer who explains that it’s only female mosquitoes that bite because they need to feed their babies.