He's come back to a present-day Earth that may or may not be his own present-day Earth.

Martha uses her modified cell phone to call her mother Francine on present-day Earth to answer to one of the questions.

Mentor has knowledge of science and technology far in advance of present-day Earth.

Early Mars had a carbon dioxide atmosphere similar in thickness to present-day Earth (1000 hPa).

He has known extensive knowledge of technology far surpassing present-day Earth.

Rex also sneaks back through the anomaly to present-day Earth.

The time travellers return to present-day Earth and become intrigued by the latest craze, the video game Death to Mantodeans.

It would seem, Captain, that the being mistakes all these things it has created for manifestations of present-day Earth.

Set on present-day Earth, but it's not an education piece.

On arrival at a council estate on present-day Earth, the Doctor, Amy, and Rory split up to try to locate the child.