Left Coast Chamber Ensemble gave us two world premieres to kick off June and to end their 26thseason: Chris Stark’s “From the Field” and Laura Schwendinger’s “Artemesia.” Stark’s first opera lasts all of 17 minutes but packs a wallop of far-reaching content: Climate Change in the U.S., and beyond. Laura Schwendinger’s “Artemesia” joins past and present in an original and {…}