U.S. Airline JetBlue will be the first domestic airline to go carbon neutral by July 2020.

The airline will also start using an alternative fuel source for flights out of San Francisco International Airport.

These changes are expected to be in place starting July 2020.

So what does this all mean? To go carbon-neutral, JetBlue will offset their carbon emissions by investing in projects that reduce greenhouse gas, like solar and wind power.

The company will also be investing in electric airplanes and alternative fuel sources.

Mendelsohn says they chose to start with carbon offsets because it's an action the company can take immediately while they work on other tasks.

She says these changes will apply to all domestic flights.

This comes as the aviation industry is trying to cut its greenhouse gas emissions in half by 2050, according to Reuters.