科学美国人60秒:油价下跌加剧全球变暖-托福听力下载

点击查看>>科学美国人60秒音频：油价下跌加剧全球变暖

　　科学美国人60秒中英文翻译：油价下跌加剧全球变暖

　　科学美国人60秒英文文本

　　Remember when a barrel of oil cost more than 140?

　　That was way back in 2008.

　　Nowadays, cars and trucks have been made to go farther on less fuel.

　　Alternatives like ethanol have boomed.

　　And fracking has unleashed a flood of oil formerly trapped in shale rock underneath North Dakota, among other places.

　　As a result, oil prices have fallen—far.

　　The price of a barrel of oil has dropped below 60.

　　But what’s good news for drivers is bad news for the global bid to cut climate changing pollution.

　　Burning oil in vehicles is the second largest source of fossil fuel pollution.

　　It's also bad news for alternatives, like new facilities that turn corn stalks into ethanol.

　　Hybrids and electric cars are less popular when gas is cheaper.

　　In fact, the sport-utility vehicles of yesteryear are staging a comeback.

　　But back on the good news front:

　　a falling price of oil reduces the incentive to do expensive things to get the liquid fossil fuel—like drill in the Arctic or mine Canada's boreal forest for tar sands.

　　Of course, in the long run oil prices are likely to go back up.

　　It's just a question of how much environmental damage gets done before that happens.

　　中文翻译请点击下一页