Earth… the only home we’ve got. What you see is a snapshot of the future that we time jumped into.

According to the history lesson we received from a new friend we made in this strange city, the pollution problem in our timeline led to major changes in the earth's climate which in turn led to the melting of the polar ice caps.

We also learned that one of our crew may have been responsible for leading the development of the underwater cities before the coming of the Time of Waters.

http://channel.nationalgeograp