Mayor Marty Walsh announced the two firms selected to head Boston’s first Urban Forest Plan — a 20-year project focused on protecting the city’s trees, addressing climate change and improving the overall lives of Boston residents.

World Wetlands Day commemorates the Feb. 2, 1971 signing of the Ramsar Convention on Wetlands, which internationally recognized the value of preserving and maintaining wetlands, and serves as a day to raise global awareness about wetlands protection.