Right at this very second, you’re staring at and breathing in carbon dioxide. Let’s think back to middle school science class: humans and animals breathe in oxygen taken from plants that converted carbon dioxide into that oxygen.

Unfortunately, there has been an increase in artificially made carbon dioxide emitted into the cycle. Between 1990 and 2013, carbon dioxide increased by 7%. The traffic emissions alone account for almost 60% of those extra fumes.

Our planet however, still absorbs the same amount of carbon dioxide while carbon emissions have increased, which means there is more of it in the air than the earth can handle.

That’s why a group of Canadian scientists are working on the construction of a wall that sucks carbon dioxide out of the air. The contraption is supposed to absorb air molecules and create carbon-neutral fuels. The machine is said to do the carbon absorbing equivalent to millions of trees.

The wall will be made up of a stack of cube shaped fans. The fans suck in the air molecules, which are captured by carbon-absorbent surfaces. Those molecules are then turned into a liquid that will be harden and turned into solid carbonate pellets. Then the pellets are melted to release pure carbon dioxide, which can be used as fuel.

The scientists have a prototype, but are hoping to build a pilot plant.

These walls could solve both the extra carbon dioxide emissions in the air and the fuel problem in our country.