Thermal pollution can potentially have serious effects on marine life.

This area is affected by background pollution.

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

This document contains environment-dependent characters.

It is reported that North Korea has conducted another underground nuclear test.

I went to the station through the underground passageway.

He traveled around the world in search of the elixir of life.

This soup made from boiled rice is very delicious.

I found a big puddle in the park.

His efforts were a drop in the bucket.