With events on Earth Day and throughout the week, New York City celebrates sustainability and ways to live in harmony with the planet. The scheduled festivities, including concerts, exhibitions and educational forums, are held each year at Grand Central Terminal and Union Square. Get outside at Union Square with performances and family-friendly fun; a 5K walk throughout the City takes participants to sites like rooftop gardens and composting facilities. Exhibitors at Grand Central present a host of opportunities and information on building a sustainable lifestyle and a healthier planet. For more information, visit earthdayinitiative.org.