See, down at the zoo things aren't going so well. There are floods, sleet, heat waves, hail, and all sorts of crazy 10-plagues-like weather happening.
But Luke still has to run the zoo. (At least it's on a hill, right?)
Luke's house is even higher up on a hill, in a turret. He can look down on everyone from there and be comforted. Right now, the view outside of his turret isn't so comforting anymore, so he has to take an Alka-Seltzer to get sleep.