Urban forests are dying. Baltimore shows us how to bring them back.

One city. One volunteer. 15,000 trees.

Urban canopies help our air, health, and electric, bills, but they're shrinking. Tobias Hutzler / Trunk Archive

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Walk through Baltimore's neighborhoods, and look up. The fan-shaped ginkgo leaves and ­ruby-red pearls dangling from cherry branches are the literal fruits of how Gene DeSantis has spent the predominant part of his life. On Saturdays, the slight, cap-wearing 57-year-old plants trees. By his count, 15,223 of them over the past 40 years....CLICK HERE