The Economist fala das consequências do degelo no Árctico

Talvez, o mais curioso da notícia, pelo menos para mim, é vir publicada onde vem.

Continuar a ler em Global warming and the permafrost: Thaw point | The Economist: "The Arctic tundra is one of the world’s most extensive ecosystems, and the frozen soil known as permafrost, which underlies it, can be hundreds of metres deep. But as the world warms up in response to the millions of tonnes of carbon dioxide and other greenhouse gases being poured into the atmosphere each year, so does the permafrost. As the permafrost thaws, bacteria start chewing up the organic matter it contains. This releases yet more carbon dioxide, as well as methane, another greenhouse gas, which has 25 times the warming potential of CO2. Edward Schuur of the University of Florida in Gainesville, a doyen of the field, estimates that the world’s permafrost contains twice as much carbon as its atmosphere. If even a fraction of that were released as CO2 and methane, it would be bad news."