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Articles on Carbon dioxide (CO2)

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Solar radiation management involves spraying tiny reflective particles into the upper atmosphere to reflect away some of the energy from the sun Shutterstock

Blocking out the sun to reduce global warming - an idea still in the making

Solar radiation management might be able to reduce some of the risks of global warming while countries get their emissions under control.
A wide range of industrial processes have released greenhouse gases into the atmosphere. Paulo Resende/Shutterstock.com

Global stocktake shows the 43 greenhouse gases driving global warming

While the gases most responsible for global warming - carbon dioxide, methane and nitrous oxide - continue to climb, other industrial greenhouse gases are being brought gradually under control.
Rice paddies are one of the major sources of methane in agriculture. Amir Jina/Flickr

Methane from food production might be the next wildcard in climate change

Methane concentrations in the atmosphere are growing at a faster rate than any time in the past 20 years.
Dry period in semi-arid central Australia. James Cleverly

Australia’s ‘great green boom’ of 2010-11 has been undone by drought

Extreme wet years are getting wetter and more common. This means Australia's terrestrial ecosystems will play a larger role in the global carbon cycle.
The earth’s missing ‘fingerprint’ sits somewhere in the upper atmosphere, but for some reason eludes climatologists. Shutterstock

Explainer: the search for Earth’s ‘missing fingerprint’

Without understanding why the 'fingerprint' has failed to appear our predictions about global warming - as carbon dioxide concentrations increase - are uncertain.

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