He is conducting research on a new energy source.

He is researching about a new energy source.

He loves science classes.

The number of nuclear-armed countries is increasing worldwide.

He decided to advance his pieces to make his career successful.

I am very interested in social science.

My brother is a graduate student at the University of Tokyo.

My laboratory is on the third floor of the university.

He is known as an excellent researcher.

I am a member of that research association.