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Plants Suck 123 Billion Tons of CO2 Annually

Tropical forest from flux towerRecent publications from the Canadian Carbon Program, including the McMaster Centre for Climate Change, were featured by CBC news.

Measurements were taken from 253 flux towers around the world, including this one high above the tropical forest in Ghana. (Science/AAAS).

Trees, shrubs and grasses around the world take in 123 billion tonnes of carbon dioxide a year through photosynthesis, an international research team has calculated.

The results published online in Science Xpress on Monday mark the first time researchers have based such a calculation on such a large number of actual measurements instead of mainly computer modelling, said Altaf Arain, an associate professor of geography and earth sciences at McMaster University in Hamilton, Ont.

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