Earth Day hack, from last year: http://hacks.mit.edu/Hacks/by_year/2017/earth_day/ http://hacks.mit.edu/Hacks/by_year/2017/earth_day/ was left up for several da

Earth Day hack, from last year: http://hacks.mit.edu/Hacks/by_year/2017/earth_day/ http://hacks.mit.edu/Hacks/by_year/2017/earth_day/ was left up for several days (not listed there, but I was around to see it up)