From the city's most recognizable building to its first green commercial office tower, lessons learned underneath the sustainability skyline of New York City will be shared at an ASHRAE speciality conference April 19-20 at the Grand Hyatt in NYC. Among the speakers at ASHRAE's "Existing Buildings in Urban Areas: Dramatically Cutting the Energy Waste,: are Tony Malkin, president, Malkin Properties, a real estate firm that owns and manages over 14 million square feet of office, retail residential and other properties in 15 states, including the Empire State Building, and Jody Durst, co-president, The Durst Organization, the owner, manager and builder of 9 million square feet of mid-town Manhattan office and residential properties. To register or for more information, visit www.ashrae.org/cutenergywaste.