AECOM Design firms like AECOM are reinventing green; the engineer is designing this Sacramento basketball arena, home of the Kings, to be first U.S. net-zero energy sports arena. Related Links: The Top 100 Green Building Contractors Seek Longer-Term Impacts 2015 Top 200 Environmental Firms Push On Amid Global Market Challenges For the past 15 years, the U.S. Green Building Council's Leadership in Energy & Environmental Design standards has been the touchstone for sustainable design and construction. But the 2009 LEED version 3 continues to be the go-to guide for green design as clients hold off on pursuing the more stringent

Lower oil prices, regional tensions in the Middle East and economic turbulence in Europe have undermined growing demands for infrastructure around the world. And the sharp drop in the Chinese stock market and the Greek debt

Hill international Grand ProjectHill International is the lead project manager on the $800-million, 870,000-sq-ft Grand Egyptian Museum in Giza, which is scheduled to open in August. Related Links: Complete 2015 ENR Top 100 Professional Service Firms with Data and Analysis (subscription required) More ENR Top Lists The market has returned to health, which should be good news to professional services firms like construction and program managers. However, many CMs and PMs are seeing the market as a mixed bag, with owners having to be convinced that CM services are worth the price and that experience and expertise, not price, should