Summary: Take a ride on the Rex Express this week as we find out how the world might work without any trains. Plus... dinosaurs! We'll meet Q-Rex, a young dinosaur with insatiable curiosity, Pops-Dino, his stubborn dad, and Tara Dactyl, the crotchety old flier who keeps all the other beasts in check. Help us out by leaving a review on iTunes or following us on twitter @whatifworldpod. If your child would like to leave a What If question, they can do so at 205-605-WHAT!
