Global Warming (04:52)

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CO2 emissions are making the planet warmer. Earth's climate and weather have changed. Scientists are working on new technologies to reduce emissions.

CO2 Emissions (06:16)

Zero CO2 emissions within 30 years is necessary to reduce global warming. While renewable energy usage is expanding, researchers are working on ways to remove CO2 from the atmosphere.

CO2 Storage (04:51)

Once experts remove CO2 from the atmosphere, it must be stored. One storage theory is to place the CO2 underground to bond with basalt; experts in Iceland are testing the idea.

C02 Recycling (08:33)

Some CO2 emissions, like those from jet fuel, cannot be eliminated. Researchers are testing a way of removing CO2 from the air and turning it into liquid hydrocarbon fuel, which is carbon neutral. Researchers are looking into other ways to recycle carbon emissions.

Cloud Brightening (08:00)

Alternative energy sources reduce carbon emissions, but the CO2 that is already there traps heat from the Sun. Solar geoengineers are looking at ways to intercept solar waves and reduce heat. One team is working to brighten clouds by adding saltwater particles.

Planet Brightening (04:51)

Scientists are researching putting particles into the stratosphere to reduce the light taken in from the sun. The process would recreate the effects of a volcanic eruption.

Forests (08:55)

Trees trap huge amounts of carbon. Researchers are studying the global forest system to see where more trees could be added.

Grasslands (05:30)

Researchers are looking into using agricultural land to capture carbon. Composting reduces the release of carbon and keeps it stored within the grasslands.

Credits: Can We Cool the Planet? (01:32)

Credits: Can We Cool the Planet?