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Science 16 October 1998:
Vol. 282. no. 5388, pp. 386 - 387
DOI: 10.1126/science.282.5388.386
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News of the Week

CLIMATE CHANGE:
Possibly Vast Greenhouse Gas Sponge Ignites Controversy

Jocelyn Kaiser

In what is shaping up as one of the most controversial findings yet to emerge in the greenhouse gas debate, a team of researchers on page 442 of this issue of Science presents evidence that North America sops up a whopping 1.7 petagrams of carbon a year--enough to suck up every ton of carbon discharged annually by fossil fuel burning in Canada and the United States. This could have ramifications on the climate change treaty signed in Kyoto, Japan, last December: The countries of North America could argue that their ability to soak up excess CO2 should offset their emissions. But critics are already attacking the study for everything from its methodology to its implications.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)