Join Alex and Jess as they catch up as Alex is feeling better. They talk a little holidays, some Gossip Girl (xoxo), and Fresh off the Boat before Alex tells Jess about the engineered marvel that is the longest international underwater tunnel in the world, the Detroit - Windsor tunnel. How exactly are underwater tunnels built? What came first, the tunnel or the bridge? How much air is pumped through the tunnel every 90 seconds? Tune in and find out!