The existence of dark matter has not yet been fully proven.

Antibiotics don't work for colds, so please don't take them unnecessarily.

It is said that antimatter has properties opposite to those of matter.

This food may contain carcinogens.

The air in this area is greatly affected by pollutants emitted from factories.

We exist as a part of the material world.

A cooling device utilizing the principle of radiative cooling has been developed.

He is receiving treatment for brain radiation.

Electromagnetic radiation conveys energy in forms such as light and radio waves.

His nature is very kind.