Snowman's Revenge / Dome of Doom

S3, E11: "Dome of Doom" The Farmer reads in the newspaper that "Mega-Veg Farmaceuticals" is paying big bucks for volunteers to live in a geodesic dome to test their new farm products, and he signs up. Soon Muriel and Courage are planting chemically-enhanced super seeds under an Astrodome-sized enclosure that covers the Farmhouse. But the seeds sprout into a garden of angry predatory vegetables and begin attacking. Courage must find a way to get rid of the deadly plants before he and the family turn into plant food. "The Snowman's Revenge" The Snowman must find a new home, and plans to create a West Pole. He chooses the western-most spot on the planet: right in the middle of Nowhere. The Snowman arrives, takes over the farmhouse, and erects a pole -- the official West Pole -- in their living room. Then he forces the Family to help him spread a blistering winter, or else they'll get the deep freeze. To make the North and South poles livable again so the Snowman can go home, Courage must reverse global warming by locating the hole in the ozone and sewing it up.