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According to a study published in the Journal of Insect Behaviour, the ants carefully create the turrets with highly porous walls which allows air to flow through the Chambers.

根据一项发表在《昆虫行为》的杂志上的研究成果，蚂蚁能够精心制造一种有气孔墙的土塔，空气能够在这些墙和外界之间流通。

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The paper, called Clearing the Air: Livestock's Contributions to Climate Change, was first published last October in the journal Advances in Agronomy.

这篇名为净化空气：畜牧业对气候变化的贡献的论文曾最先发表于去年10月的《农业进展》杂志上。

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Their findings appear in the journal Indoor Air.

BBC: Image of a smoke filled room

"It's a pay by weight system and it's here to stay, " Samoa Air Chief Executive Chris Langton told The Wall Street Journal Wednesday.

WSJ: Weigh More, Pay More on Samoa Air

The world sent 38.2 billion tons of carbon dioxide into the air in 2011, according international calculations published in a scientific journal in December.

NPR: Experts: CO2 Record Illustrates 'Scary' Trend