Leslie Camila-Roseのインスタグラム(leslie_coutterand) - 12月13日 03時35分

“Trees can make a city sidewalk prettier, sure. But that’s not even their best trick. A growing pile of research suggests that planting more urban trees, if done right, could save tens of thousands of lives around the world each year — by soaking up pollution and cooling down deadly heat waves.

In fact, as a fascinating new report from the Nature Conservancy details, a well-targeted tree campaign could be of the smartest investments a hot, polluted city can make. Which seems important, given that the world’s cities will add about 2 billion people this century, and they’re only getting hotter. “A lot of cities still think of trees as just ornamentation,” says Rob McDonald, the lead scientist for the Nature Conservancy’s Global Cities program and a co-author of the report. “But they really do so much more than that. And the evidence suggests that we should start thinking of trees as a crucial part of our public-health infrastructure.” How trees — yes, trees — actually save lives

We are trying our best here!
As researchers have discovered over the years, across dozens of studies, urban trees do at least two important things for public health:

1) They can soak up fine particle pollution from cars, power plants, and factories — an important job, given that particulates wreak havoc on human lungs and kill some 3.2 million people worldwide each year. The precise effect varies from city to city, but generally trees do improve air quality.

2) Urban trees can also cool down neighborhoods anywhere from 0.5 degrees Celsius to 2 degrees Celsius on the hottest summer days, which is vital during deadly heat waves.
The new Nature Conservancy report sifts through all this research and lays out some global scenarios. At the high end, a massive new tree-planting campaign in the world’s 245 largest cities, costing around $3.2 billion in all, could save between 11,000 and 36,000 lives per year worldwide from lower pollution. Those trees would also prevent between 200 and 700 heat-wave deaths per year — with that number presumably going going up over time as global warming unfolds.”
Article by @bradplumer for vox.
#trees #oneness #ethics #environment #conservation

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