Transportation consultant David Fields of NelsonNygaard will speak about promoting walkability in city neighborhoods and suburbs in the next Tomorrow Plan series installment at 7:30 a.m. Nov. 10 at Windsor Heights Community Center. Fields, who led efforts on the transportation segment of Tomorrow Plan, for 20 years has helped communities expand their transportation choices, from walking and biking to transit and park-and-ride facilities. “Investing in walkability is a strategy worth applying across the metro,” said Todd Ashby, executive director of the Des Moines Area Metropolitan Planning Organization. “This can help cities yield higher tax revenue on their infrastructure investments, while improving the health and well-being of residents.” Fields’ speech is free and open to the public.