Articles on CO2

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A sensor monitors carbon dioxide from the rooftop of the SF Exploratorium. Alexis Shusterman

Low-cost sensors track CO2 where it counts

Scientists build network of inexpensive air monitors to track emissions with fine-grained spatial detail – an alternative to satellites or pricey land-based CO2 monitors.
Phytoplankton are responsible for half the world’s productivity. Here, a phytoplankton bloom in the northern Pacific. NASA Goddard Space Flight Center/Flickr

Tiny marine plants face a mixed bag thanks to climate change

You may not have heard of them or given them much thought, but phytoplankton — the microscopic plants that grow throughout the world’s oceans — are the foundation of oceanic food webs. Although tiny, they…
To match the US, Australia would have to increase its emissions reduction target to 25% below 2000 levels. AAP Image/Alan Porritt

FactCheck: are Australian and US climate targets the same?

*If you use the full Kyoto period — 1990 to 2020 — the US is minus 5% and Australia is almost exactly the same. * Environment minister Greg Hunt, Radio National, November 17. *We and the United States…
Plants use photosynthesis to build molecules and energy they can use. By copying plants, humans can make cleaner fuels. Ranjit Bhatnagar/Flickr

To shift away from fossil fuels, we need to copy plants

Most of the energy that fuels our lives comes from plants. Whether it is a fossil fuel that was formed hundreds of millions of years ago or the food we eat, all carbon-borne energy has its ultimate origins…
The Earth is finite - so are there limits to growth? NASA's Marshall Space Flight Center/Flickr

Why uncontrolled climate change may be an ultimate limit to growth

“But who do you think’s right, Prof? The optimists or the pessimists?” At the end of my sustainability economics course in 2007, students were challenging me to end 20 years of professional fence-sitting…

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