Latest step taken by the US Environmental Protection Agency (EPA) to curb greenhouse gas emissions is to regulate carbon dioxide pollution from airplane engines.

The EPA will take the help of the Clean Air Act (section 231(a)) to control air pollution that causes climate change and threats public health. The EPA would be taking help from International Civil Aviation Organization (ICAO).

The agency has found that specific pollutants from planes like CO2 and methane are dangerous for health and they also add to climate change. Daniel Rutherford of the International Council on Clean Transportation said that at the global level, aviation is responsible for around 700 million metric tons of CO2 every year.

"It's currently unregulated at the global level, and overall emissions are expected to triple by 2050", said Rutherford.

It is also expected that new rules can also be framed. As per data, airplanes represent around 11% of emissions from the US transportation sectors. But it is expected that the industry will continue to expand. As per the FAA projections, from 2101 to 2035, fuel consumption will increase from 49%.

Experts said that de-carbonization is bit difficult for planes, but authorities concerned have started to take steps.

As per the EPA, American planes leads to 29% of the greenhouse gas emissions of the airline industry across the world. One of the best ways will be to come up with efficient planes, which will be powered by carbon-neutral advanced bio-fuels.