Carbon dioxide

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Rivers in many agriculturally significant areas of Australia could lose water as the landscape grows greener. Kerry Raymond/Wikimedia Commons

River flows drop as carbon dioxide creates thirstier plants

Rising carbon dioxide levels are making plants grow faster, sucking up more water and reducing river flows in many agriculturally important areas of Australia, according to new research.
For the first time, the February monthly average carbon dioxide levels at the Mauna Loa Observatory have passed 400ppm. NOAA/Wikimedia Commons

February carbon dioxide levels average 400ppm for first time

We have hit a new milestone in carbon dioxide levels: the average for February topped 400ppm. It's the first time this has happened in the northern winter, when levels are typically lower than in summer.
To find out if the carbon price worked, you have to look at the electricity sector. Paul Hocksenar/Flickr

FactCheck: did carbon emissions fall faster before the carbon price?

Emissions fell by six times the rate in the five years before the carbon tax than they did under the carbon tax. – Environment minister Greg Hunt, The Guardian, January 17, 2015. Australia’s total greenhouse…
Enjoy the color while you can before climate change makes a mess of this too. chensiyuan

Fall foliage in the crosshairs of climate change

One of nature’s most spectacular events occurs every autumn, when the leaves of hardwood trees burst into brilliant color before falling to the ground. These autumnal displays in the eastern United States…
A new study shows plants may absorb more carbon than we thought. Jason Samfield/Flickr

Plants absorb more CO2 than we thought, but …

Through burning fossil fuels, humans are rapidly driving up levels of carbon dioxide in the atmosphere, which in turn is raising global temperatures. But not all the CO2 released from burning coal, oil…
Carbon emissions from burning fossil fuels and cement-making reached 36 billion tonnes in 2013. Shutterstock

Mapping global carbon emissions

The latest report on global carbon emissions released this week revealed that carbon dioxide emissions will likely reach 40 billion tonnes this year. Growth in emissions continues to match the worst-case…

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