Nature World News: Trees are nature's answer to diminishing air pollution, as well as reducing respiratory problems for the human population, according to US Forest Service scientists and collaborators behind a new study.
Their broad-scale estimates concluded that trees are saving more than 850 human lives a year and preventing 670,000 incidents of acute respiratory symptoms - and that's just by improving air quality less than one percent.
Not to mention that trees can help save $7 billion a year in health costs...