carbon dioxide

A blazing sunset lights up the evening sky

If atmospheric carbon dioxide levels double from their pre-industrial levels and are maintained, the world would probably experience eventual warming from 2.3 – 4.5°C, rather than the previously estimated 1.5 – 4.5°C range.

A person sitting on top of a mountain

As the world warmed from the last ice age, a rise in carbon dioxide levels stalled for nearly 2,000 years. That's always puzzled scientists, but now they think they know what happened.

Coal-fired power plant

Making catalysts to convert waste carbon dioxide into useful industrial products has been expensive and complicated – until now. UNSW engineers show it’s as easy as playing with Lego.

hot sun

Global temperatures for February showed a disturbing and unprecedented upward spike, write Steve Sherwood and Stefan Rahmstorf.

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Carbon dioxide concentrations in seawater could reach levels high enough to make fish “intoxicated” many decades earlier than previously thought, with serious implications for the world’s fisheries.

river

Rivers in many agriculturally significant areas of Australia could lose water as the landscape grows greener, write Anna Ukkola and Albert Van Dijk.

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Global average temperatures will rise at least 4°C by 2100 if carbon dioxide emissions are not reduced, according to new UNSW research published in Nature.

Sky

Carbon dioxide levels have risen above 400 parts-per-million, but geoengineering is no alternative to reducing emissions, writes Professor Steve Sherwood.

Solar

A carbon price of between $50 and $100 per tonne would make coal-fired and gas-fired power less economical than renewable electricity, a UNSW study shows.

Corals

Shallow coral reefs may be even more susceptible to increasing acidity caused by heightened levels of carbon dioxide in the atmosphere and oceans than previously recognised.

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