Celebrate Earth Day with the tenth anniversary of this yearly event in Queens' Rockaway Park. For the last nine years, organizers have outdone themselves putting together an array of activities sure to please kids and their families, and this year is no exception. The 2016 list of happenings includes kite-making, recycling Olympics, mock dolphin rescue, plantings, water testing, raptor demonstration, a firehouse safety obstacle course and art-related booths to learn how to better appreciate and conserve the Earth's resources. And it's all free, so attendees can make a low-cost day of it. For more information, visit rwalliance.org.