He is majoring in climatology at university.

The destructive power of that hurricane was stronger than anything we could imagine.

He is known as the wrecker of the team.

He should stop his self-destructive behavior.

The robot initiated the self-destruction program.

The process of terraforming is part of transforming other planets into a habitable environment for humans.

Earth science is an important field of study for unraveling the mysteries of nature.

I am an Earthling.

We are searching for extraterrestrial life.

Her necklace was covered with a layer of pearl.