Sweetgrass ★★★½

at its best captures the perturbing, unstable tension between the awe-inspiring pristine beauty of life and the world and the baleful ruthlessness and capriciousness of nature. sometimes in the same moment, as when a distraught herder questions the entire endeavor and curses the gorgeous rolling mountains below. sometimes in consecutive moments, as violent unceremonious births of sickly sheep are followed by a clean baby being dressed in a little onesie. instability wins out, the undertaking has no place in the world today. wry evidence of that tough fact comes early on as the herd wanders through town, a Radioshack prominent in the background.