By 2020, the average American household will emit about 15,000 metric tons of CO2-equivalent.

This equates to about a 2% reduction from the current level.

It means that the United States will need to reduce our overall carbon footprint by nearly a third by 2020.

While a reduction of 15% is impressive, it’s still only a small step in the right direction.

And it requires a lot of work.

Here’s why.

What is carbon dioxide?

Carbon dioxide is a byproduct of the burning of fossil fuels.

The more carbon dioxide emitted, the more carbon is absorbed by the atmosphere.

Carbon dioxide is also the main ingredient in the greenhouse effect, which is responsible for the warming of the planet.

In other words, we have to make a lot more CO2 to keep the planet from warming.

To put this in perspective, if we emit all the CO2 we consume today, we would emit about 2,500 million metric tons in 2020.

So it takes an enormous amount of COII to keep global warming within the 2% carbon cut by 2020 threshold.

If we don’t reduce CO2 emissions significantly, we’re already at the threshold for the 2%, meaning we’re on track to miss the target of 2% of our carbon emissions.

This is a key finding in a new paper published in the Proceedings of the National Academy of Sciences.

Researchers at the University of California, Davis, led the study by modeling the impact of changing our carbon intensity and emissions.

They used this modeling to analyze how different scenarios could affect emissions in different regions.

In their model, emissions from the U.S. would be reduced by as much as 6.3% over the next five years.

The model also showed that by 2030, carbon dioxide emissions would be 20% lower than they currently are.

These results provide a solid baseline for assessing the economic and social benefits of carbon-reduction policies.

In addition, they indicate that we should be focusing on the carbon intensity of our energy consumption, rather than the amount of carbon emitted.

The U.N. Climate Change Conference is held every four years and aims to coordinate efforts to mitigate climate change, but is not expected to bring an end to the fight against climate change until 2040.

A second conference will be held in Paris in 2021.