The new home of the Minnesota Twins becomes the second LEED-certified ballpark in Major League Baseball, earning Silver Certification after collecting the most certification points ever awarded to a professional ballpark.

St. Paul's RiverCentre ups conservation goals to reduce the carbon footprint at the convention center, Xcel Energy Center and Wilkins Auditorium; the complex is also using federal stimulus funds to replace parking-ramp lighting -- cutting energy consumption by an estimated 47 percent -- and working with Xcel Energy Center to reduce solid waste coming out of the auditorium/arena/convention-center complex.

Earth Day is an auspicious time for sports teams to show off the strides they've made on the environmental front, especially when a promotion can be combined with the effort. Tomorrow night the Frederck Keys will show off the enviromental strides they've made at Harry Grove Stadium, which includes auto-flush valves on toilets and urinals, an LED scoreboard that burns less power than the old one, and new green lights.Goodwi