EBJ's annual analysis of the environmental consulting & engineering industry details a $28.8 billion U.S. industry in 2012 and $29.9 in 2013. Several market segments-notably oil & gas and the extractive industries in North America and mining in Canada and South America-are offering substantial opportunity, but the economy and government budgets remain major concerns for C&E executives. Environmental consulting firms in general maintained or increased their profitability in 2012, and M&A activity continues to pick up. EBJ's annual analysis of the C&E segment of the environmental industry presents data on market size, market breakdowns, growth, forecasts, consolidation, and also lists the top 100 U.S. environmental consulting & engineering firms. Featured profiles of large and small firms highlight strategies to cope with challenged markets and take advantage of new ones.