If atmospheric methane and carbon dioxide were as abundant now as they were in Earth's earliest atmosphere, the planet's temperature would likely be too hot for most species living today.

如果大气中的甲烷和二氧化碳像地球最早期的大气那样丰富，那么地球的温度对今天生活的大多数物种来说可能太热了。

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For the next 1,500 years, its inhabitants enjoyed a somewhat warmer and damper climate than today, living in a well-wooded steppe area where wild cereal grasses were abundant.

在接下来的1500年里，这里的居民享受着比现在稍微温暖和潮湿的气候，他们生活在树木繁茂的草原上，那里有大量的野生谷物草。

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The carbon dioxide released 30 years ago by a steel plant in Pittsburgh that no longer exists has created an externality for people living today.

30年前，匹斯堡的一家钢厂，现在已经不存在了，排放的的二氧化碳形成的外部成本，至今仍然影响着人们的生活。

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To Sara, to Tom Bernstein, to Josh Bolten, members of the United States Holocaust Memorial Council, and everyone who sustains this living memorial -- thank you for welcoming us here today.

WHITEHOUSE: President Obama Speaks on Preventing Mass Atrocities

Developers today are responding to the increased demand for single-living "with amenities to make the building more social and fun, " adds Mr. Klinenberg, the NYU professor.

WSJ: Looking Out for No. 1 - WSJ Mansion

That means more poverty and a reduced standard of living for the middle class, as Barack Obama and his neo-Marxist Democrat Party are proving once again today.

FORBES: Policies Meant To Achieve Equality Are Very Unfair To The Least Equal