Teams from 40 area middle and high schools will compete in the Google Wind Challenge on Saturday at The Dalles Civic Auditorium.  Google’s Dave Karlson says competitors are given a box of parts to build a wind turbine that will be judged for energy production and how well it can lift a weight.  The public is invited to attend, and there will be a STEM Fair featuring OMSI and hands-on exhibits from other areas.  The Wind Challenge runs from 9 a.m. to 5 p.m. on Saturday in The Dalles Civic Auditorium.  Columbia Gorge Community College and the Gorge Technology Alliance are also taking part in the event.