Morrison Hershfield is an engineering consulting firm that provides a range of services, including building science, energy and sustainability, transportation, and water and wastewater. The company was founded in 1946 in Toronto, Canada, and has since expanded to have offices across North America and Asia. Morrison Hershfield has worked on a variety of high-profile projects, including the CN Tower in Toronto and the San Francisco-Oakland Bay Bridge. The company is known for its commitment to sustainability and has been recognized for its work in green building and energy efficiency.