Time travelers in Green River

As Ruby Sunday steps out of the TARDIS, she enters a lush prehistoric world, standing on a cliff overlooking a broad river with waterfalls and groups of roaming dinosaurs. As she admires everything in amazement after having traveled back in time, the Doctor explains where they are.

“The TARDIS stands for Time And Relative Dimension in Space. So we’ve moved location as well. This will be North America. One day this is Wyoming. Little town called Green River.”

This exchange happens in the first episode of the newest season of “Doctor Who,” which officially premieres this weekend. The clip was sh...