U.S. Cities Are Losing 36 Million Trees a Year. Cities in half the states in the country lost a significant amount of tree cover over a five year period, according to a new study. In some cases, the changes were drastic, amounting to almost half a percent of a city’s tree cover every year

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U.S. Cities Are Losing 36 Million Trees a Year. Cities in half the states in the country lost a significant amount of tree cover over a five year period, according to a new study. In some cases, the changes were drastic, amounting to almost half a percent of a city’s tree cover every year