Each year, US cities lose an estimated 36 million trees to development, disease and old age, many of which ultimately end up in landfills. Losing these urban trees " known to help cool their neighborhoods, lower carbon emissions and improve mental health, among other benefits " costs an estimated $96 million annually. In Philadelphia, a partnership is giving the City of Brotherly Love's fallen trees new life. Philadelphia Parks & Rec joined forces with Cambium Carbon, a Washington, D.C.-based startup that repurposes waste wood, and PowerCorpsPHL, a local nonprofit that creates job opportunities for unemployed and under-employed 18- to 30-year-olds, to launch the Reforestation Hub. Rather than sending trees straight to the landfill or the city's organic recycling center to simply become mulch or wood chips, the Reforestation Hub (which is co-located in the city's organic recycling center) will salvage as many trees as it can. As many as possible will be turned into Cambium's Carbon Smart Wood, which stores 5.23 pounds of carbon in each board foot. Fifteen percent of sales that come out of the hub will be donated to Tree Philly at the end of each year to support tree planting and maintenance across the city. While the hub formally launched only recently, in the year and a half that it's taken to get the infrastructure in place, it has already diverted 542 logs to create 28,000 board feet of Carbon Smart Wood.