A poisonous gas emits from Secare's body when the paramedics perform a needle decompression.

A variety of pollution control technologies significantly reduce the gases emitted into the air, including:

The hot diffuse gas in the Local Bubble emits X-rays.

When electricity is discharged into the gas, the gas emits ultraviolet light.

Each gas, depending on its atomic structure emits certain wavelengths which translates in different colors of the lamp.

As a result the gas will emit electron bundles which can be used for medical imaging or materials research.

An incandescent solid, liquid or gas under high pressure emits a continuous spectrum.

A hot gas under low pressure emits a "bright-line" or emission-line spectrum.

The gas becomes incandescent and emits a flash of intense visible and ultraviolet black body radiation.

And because it has a higher hydrogen-carbon ratio than more complex hydrocarbons, natural gas emits less carbon dioxide, which is believed to increase global warming.