Mayor Michael R. Bloomberg (left) and David Rockefeller (right) announced on April 22 that they were pledging $10 million to the MillionTreesNYC initiative to plant trees in public spaces including New York City Housing Authority (NYCHA) developments and public schools. NYCHA Chairman Tino Hernandez (center) joined the Mayor and Mr. Rockefeller at NYCHA's Jefferson Houses in East Harlem for the announcement. Over 10,700 trees are slated for NYCHA property. All nine of NYCHA's public housing developments in East Harlem will be fully planted by the close of this year's tree planting season. MillionTreesNYC is a public-private campaign to plant and care for one million trees over a decade. It is part of Mayor Bloomberg's PlaNYC to reduce greenhouse gases and make NYC more sustainable by 2030. More trees were planted at NYCHA's Wagner and Taft Houses, also in East Harlem, earlier in the week.