The slow return of performing arts is threatening the existence of some small theaters in the North Hollywood Arts District. As part of The Griffith Park Free Shakespeare Festival, Angelenos can watch “Macbeth” every Wednesday to Sunday at 7 p.m. through September 4. KCRW learns what goes into each performance. Micro forests can be as small as 10 by 10 feet, but they go a long way in enhancing biodiversity, reducing carbon in the atmosphere, and infusing soil with nutrients.