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Ever since the Industrial Revolution, humans have emitted massive amounts of extra carbon dioxide into the atmosphere.

All of our transportation, heat, gadgets, and devices, along with deforestation and development, they've all contributed to this dramatic rise in greenhouse gas emissions.

And all of those heat-trapping gases, they're warming the planet.

This past July marked the Earth's warmest month ever recorded.

As we've reported in parts one and two of our series Zero Carbon Future, governments, companies, and investors have stepped up efforts to halt these emissions.

They've increased output of renewable energy and found more effective ways to store clean energy on the grid.

Plus, the Earth does have its own way of drawing down some of these greenhouse gases.

The oceans, rocks, wetlands, plants, and forests can all soak up carbon dioxide.

When we talk about carbon capture, many people think, oh wow, these are all fancy technologies, but no.

Jan Minks is head of a research group for applied sustainability based in Germany.

These are things that nature has been doing for a long time. That's actually the nice thing about nature.

So plants are capturing carbon for us, and that is something that we can use.

But natural methods of carbon capture, while needed, are not enough to rain in greenhouse gas emissions.

The world's CO2 levels are out of balance.

So, since the 1970s, scientists have been trying to create mechanical devices that can suck up carbon dioxide.

Most of those efforts have focused on industry, filtering carbon emissions from smoke stacks and other polluters.

Many researchers thought the idea of trying to capture carbon dioxide from the air was a little too out there, and so it's been slow to take off.

But that's changing.

It's not the biggest part of the solution, but it's an important part that has not been talked about enough.

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