If Christians believe God calls them to be stewards of God’s creation, what should they do about global climate change? A series of speakers will address a range of topics regarding climate change during the next Contemporary Issues study series, starting in October at Peace Lutheran Church in Grass Valley. The free sessions are open to the public and run from 9:15 to 10:45 a.m. Wednesdays starting Oct. 3 in the church’s fellowship hall at 828 W. Main St., near downtown. Coffee and goodies will be served starting at 9 a.m. each session. The public is welcome to attend any …