Location 1: Baseball Stadium

Problem: It's too hot to play baseball outside in the summer
Task: Build a dome over a ballpark
Purpose: To create an enclosed, air-conditioned space for ball players and spectators
Size: Really big (must cover nine acres)
Budget: $250 million

Special Notes: "Do you have any idea how hard it is to play baseball in the summer? The air is so hot and sticky, I feel like I'm pitching in peanut butter! Our fans can't stand the heat either. And the bugs? They're huge! Without an air-conditioned dome, our team is doomed!"
-- Pitcher, Char County Flames

You decide to build a state-of-the-art dome for the Char County Flames. What kind of roof will you build? Do you want the roof to open like a convertible? Or will you build a rigid roof, one that stays permanently closed?

Rigid roof	Roof that opens