The nonprofit Trust for Public Land has published its annual ParkScore rankings, and some area cities are high on the list. Washington, D.C., took the top spot for the third year in a row, ranked as the nation's best big-city park system, with 24% of the District's land devoted to parks. The rankings are based on five metrics including park access, which calculates the percentage of residents living within a 10-minute walk of a park as well as park equity, which compares access in communities of color to white communities and low versus high income levels. ...