Bearing more babies and planting less trees.

多生孩子少种树。

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That means trees produce less energy from the air.

这意味着树木从空气中产生的能量更少。

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A new study found that inner-city kids living in neighborhoods with more green space gained about 13% less weight over a two-year period than kids living amid more concrete and fewer trees.

一项新的研究发现，在两年的时间里，与住在钢筋水泥更多、树木较少的社区的孩子相比，住在市中心有更多绿地的社区里的孩子，两年中增加的体重少了约13%。

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Autumn's different here Fall much less intense and trees balder earlier everything more melancholy somehow.

NPR: Zadie Smith: 'On Beauty' and Difference

Rust causes infected leaves to fall off, leaving the trees with less capacity to photosynthesize, or produce energy.

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And amazingly, they planted 100, 000 trees in less than six years.

BBC: Trekking in Rio de Janeiro