My father was diagnosed with ankylosing spondylitis.

In organic chemistry, pyruvic acid plays an important role.

The study of filterable pathogens is an important part of virology.

He feels dizzy when he stands up suddenly due to orthostatic hypotension.

Special relativity is one of the fundamental theories of physics.

General relativity is a theory of physics proposed by Einstein.

Thinking sensibly, that plan will not succeed.

The use of renewable energy helps protect the global environment.

Linear programming is a part of operations research and is used to find the optimal solution.

The United Nations Environment Programme is providing solutions to global environmental problems.