Trees New York: TNY is an environmental and urban-forestry non-profit organization that works with NYC's communities. Our mission is to plant, preserve, and protect New York's trees and neighborhoods through education and active citizen participation.

New York Tree Trust, Tree Census: The 2005-2006 Street Tree Census found 592,130 street trees-a 19% increase over the 1995-1996 census. Thanks to 1,100 volunteers and a sophisticated computer software program, New Yorkers now have a way to quantify the enormous benefits of New York's street trees-from pollution reduction to savings on air conditioning bills.

Greenstreets: Launched in 1996, Greenstreets is a citywide program to convert paved, vacant traffic islands and medians into green spaces filled with shade trees, flowering trees, shrubs, and groundcover.

STEW-MAP: STEW-MAP fills the gap in understanding about how individual citizens, non-profit organizations, businesses, and governments work together as environmental stewards. This project seeks to understand and map the ways citizens in more than 4,000 groups serve as stewards by conserving, managing, monitoring, advocating for, and educating the public about their local environments (including water, land, air, waste, toxics, and energy issues).

New York Restoration Project: Modeled on the Central Park Conservancy and other successful public-private partnerships, NYRP partners with individuals, community-based groups, and public agencies to reclaim, restore, and develop under-resourced parks, community gardens, and open space in New York City, primarily in economically disadvantaged neighborhoods.

GreenApple Corps: The GreenApple corps leads hands-on service learning projects to restore and maintain natural areas and street trees throughout New York City. Members work to preserve and restore natural areas, increase the street tree population citywide, and turn school kids into environmentally aware citizens and stewards.

Urban Park Rangers, THE NATURAL CLASSROOM: For more than 25 years, the Urban Park Rangers have provided programs that have given teachers the opportunity to use New York City parks as outdoor classrooms. New York City parks offer a "natural" opportunity to learn from and enjoy the unique natural and cultural resources in parks.