It was a good reminder on my hurried way to work: "Breathe." The sign, put up by a downtown yoga studio, hung over a small plot of green space where a car would usually park, part of an international effort to celebrate--and advocate for--public space. In the United States, groups from Portland to Providence, Miami to Missoula, are transforming a corner of their towns for the day. If there's a park(ing) space near you, take a break this afternoon and check it out. If not, watch a video of last year's event and get inspired to create your own temporary park next time around.