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New York City
Initiatives by topic
Wikipedia:Climate change in New York City (article appears to be not very up to date)
BetaNYC, building a better tomorrow for all. "We are NYC’s civic technology and open government vanguard. Since 2009, we have been leading elected officials to engage NYC’s technology community, helping pass transformative open government legislation, and supporting NYC’s civic oriented startups. We are America’s largest civic technology and open government community." - Participatory Budgeting in New York City
Community currencies activism
Community Connections TimeBank, Visiting Nurse Service of New York
Wikipedia: New York City, Energy efficiency
Cycling in New York City is associated with mixed cycling conditions that include dense urban proximities, relatively flat terrain, congested roadways with "stop-and-go" traffic, and streets with heavy pedestrian activity. The city's large cycling population includes utility cyclists, such as delivery and messenger services; cycling clubs for recreational cyclists; and, increasingly, commuters. While New York City developed the country's first bike path in 1894, and recent trends place the city "at the forefront of a national trend to make bicycling viable and safe," competing ideas of urban transportation have led to conflict, as well as ongoing efforts to balance the needs of cyclists, pedestrians, and cars.
Bike New York is an organization based in New York City that encourages cycling and bicycle safety. They are best known for producing the Five Boro Bike Tour, the largest recreational cycling event in the United States. The Tour, which occurs on the first Sunday of May every year, takes 30,000 riders in a 42-mile ride around New York City. Bike New York also produces smaller rides, offers free classes to the public, and develops customized bicycle safety and education programs in and around New York City.
Citi Bike is a privately owned public bicycle sharing system that serves parts of New York City. It is the largest bike sharing program in the United States. The system opened to the public in May 2013 with 330 stations and officially with 6,000 bikes, but six weeks later, the actual number in use appeared to be less than 4,300.
wikipedia:Environmental issues in New York City are affected by the city's size, density, abundant public transportation infrastructure, and location at the mouth of the Hudson River. New York's population density has environmental pros and cons. It facilitates the highest mass transit use in the United States, but also concentrates pollution. Gasoline consumption in the city is at the rate the national average was in the 1920s, and greenhouse gas emissions are a fraction of the national average, at 7.1 metric tons per person per year, below San Francisco, at 11.2 metric tons, and the national average, at 24.5 metric tons. New York City accounts for only 1% of United States greenhouse gas emissions while housing 2.7% of its population. In September 2012, New York was named the #1 "America's Dirtiest City," by a Travel+Leisure readership survey that rated the environmental quality of 35 prominent cities in the United States.
Package Free, a Zero Waste pop up shop in NYC opening May 1, 2017
City Harvest exists to end hunger in communities throughout New York City, doing this through food rescue and distribution, education, and other practical, innovative solutions - New Amsterdam Market - Park Slope Food Coop, Brooklyn - Foodway at Concrete Plant Park on facebook
Improving community health through farmers' markets
Regular consumption of unhealthy foods and limited access to better options are two issues routinely affecting New York City's population. In order to address these, NYC has joined forces with the city's Department of Health, and together they have designed three key programs under their Farmers Markets strategy: Stellar Farmers Markets, Farmers Markets for Kids and Farm to Preschool.
The Stellar Farmers Markets program provides free, bilingual education workshops and cooking demonstrations and recipes at several farmers markets throughout the city, promoting the benefits of healthy eating and using locally grown, seasonal produce. As an incentive to attend the workshops, "Health Bucks" (coupons worth $2 each) are given to those participating in the National Supplemental Nutrition Assistance Program with Electronic Benefit Transfer (EBT) cards. These coupons can then be redeemed when buying fresh fruits and vegetables at all farmers markets across NYC.
In order to instill healthy eating habits in young consumers, NYC has two other initiatives: Farmers Markets for Kids and Farm to Preschool. The former focuses on bilingual, creative food workshops and hands-on activities, and the latter brings fresh, locally grown fruits and vegetables to participating New York City preschools, giving parents, staff and community members weekly access to fresh produce (which they can also pay for with Health Bucks and EBT cards). Farm to Preschool covers 11 locations across NYC, while Farmers Markets for Kids was hosted at two markets in South Bronx from July to October 2016. Stellar Farmers Markets is the largest municipal program providing access to fresh produce for low-income New Yorkers. 
Farmers' Market (New York City) W
Design Trust for Public Space, nonprofit organization dedicated to the future of public space in New York City. "Our projects bring together city agencies, community groups and private sector experts to make a lasting impact — through design — on how New Yorkers live, work and play.  - The High Line & Friends of the High Line (Wikipedia) The High Line is a 1-mile (1.6 km) New York City linear park built on a section of an elevated former New York Central Railroad spur, redesigned and planted as an aerial greenway - People Make Parks supports community groups to contribute to NYC Parks’ building and design process
Wikipedia:Parks and recreation in New York City: Major municipal parks in New York City include Central Park, Prospect Park, Flushing Meadows-Corona Park, Forest Park, and Washington Square Park. The largest is Pelham Bay Park, followed by the Staten Island Greenbelt. City Parks Foundation offers more than 1200 free performing arts events in parks across the city each year. The city has 28,000 acres (113 km²) of municipal parkland and 14 miles (22 km) of public municipal beaches.
Reduce, reuse, repair and recycle
Earth Matter is a nonprofit organization dedicated to reducing the amount of organic waste that enters the garbage stream in New York City. By creating the local infrastructure needed for composting and encouraging community participation in events and education programs, the organization has gone from strength to strength over the past decade. 
Sustainable transport activism
Mare Liberum, Hacking the Free Seas Since 2007. Mare Liberum is a freeform publishing, boatbuilding and waterfront art collective, based in the Gowanus area of Brooklyn, New York. Finding its roots in centuries-old stories of urban water squatters and haphazard water craft builders, Mare Liberum is a collaborative exploration of what it takes to make viable aquatic craft as an alternative to life on land. - Transportation Alternatives, advocate for bicycling, walking and public transit
Towards sustainable economies
How a series of disasters led one entrepreneur to a life of cooperatives
After a catastrophic earthquake devastated Guatemala on Feb. 4, 1976, Lorena Giron, who was just twelve years old at the time, was trapped under the rubble of her collapsed apartment for hours. She was eventually pulled out of the debris by a rescue team — but her family never made it out. "All of my siblings as well as my mother died," Giron says. "I was the only survivor." The earthquake claimed approximately 23,000 lives. It was during this time of crisis early on in her life that Giron first experienced the powerful forms of community-led relief efforts that tend to arise spontaneously during times of acute crisis — something that she would carry with her throughout her life. "I think that traumatic experiences make people stronger and more resilient," says Giron. "After the earthquake, we were completely isolated. But in that moment, despite all the losses, we all came together to move beyond that disaster."
Giron's connection to grassroots, community relief was strengthened throughout her subsequent experiences during the Guatemalan Civil War, which was a more chronic disaster that afflicted the country from 1960-1996. Giron's husband was killed in the war, which she says was politically motivated. She says she knew then that she had to leave Guatemala. She moved to the United States, eventually finding herself in New York City, New York. She was living in the Rockaways when, remarkably, she experienced yet another disaster: Hurricane Sandy. At the time Giron says she was commuting two hours a day to get to work as a domestic housekeeper. After the hurricane hit, the commute became impossible, she says, and she lost her job, leaving her unemployed for six months. But then something unexpected happened at the church that Giron attended.
As a center for community action in a heavily immigrant and low-income community, Giron's church regularly organized a number of events to address the local community's challenges, including things like health campaigns and clinics with immigration lawyers. After Hurricane Sandy hit, the church began forming partnerships with other organizations and activist groups to provide help for those affected.
"One of the first organizations that came in was Occupy Sandy," Giron says. "They came with the idea of inviting other churches into the mix and creating working groups." Occupy Sandy was a newly formed community-driven relief effort that grew out of the networks and strategies developed by the Occupy Wall Street movement. It filled a vacuum left by the official disaster response and made a significant impact in boroughs like the Rockaways and the Far Rockaways. At Giron's church, Occupy Sandy volunteers began setting up community kitchens and distributing food and supplies to those in need. What distinguished Occupy volunteers from other relief organizations was their style of relief work — it was always community-led and focused on community empowerment. "They were looking to collaborate with the community in order to provide this assistance." Giron says. "It was very beautiful to see the way that they went about it."
Occupy Sandy's slogan was "another world is possible," and their ultimate aim was to go beyond immediate disaster relief to begin addressing some of the systemic challenges afflicting the communities they worked with. It didn't take long for this broader vision to take hold of Giron and her community. Giron had been dreaming of opening up a restaurant for some time before Sandy hit, and when she shared this dream with Occupy volunteers, they sprung into action. With the support from The Working World, a local organization that builds cooperative businesses in low-income communities, they began to explore how to turn Giron's dream into reality in a way that would bring it under the framework of radical economic empowerment. In collaboration with the church, they began a twelve-week course that focused on launching a worker owned and managed cooperative. "One-hundred and fifty people showed up," Giron says. "It was exciting because I learned I wasn't alone in wanting to start a business."
Giron and her fellow church members were already accustomed to working together cooperatively in their church, so the idea of starting a cooperative business felt natural to them. "What I really liked about it was that I wouldn't be governed by any one individual, but that I would be a co-owner along with my co-collaborators," Giron says. "The thought of governing a business together in a democratic fashion was very new and exciting to me."
It wasn't long before they opened their first business: a cooperatively-owned and run bakery called La Mies Bakery in the Far Rockaways. Like a lot of new businesses, it didn't stay open for long, but for Giron, it was just the beginning of a new career in cooperative business development. "There were a lot of mistakes that we made with the bakery, and a lot of challenges that we faced where now, when I'm working with a business that is looking to start fresh, I can say, 'Oh, you know, you can avoid these pitfalls by doing such and such things.'"
Giron is now a coordinator for Worker-Owned Rockaway Cooperatives, an initiative that works to equip Far Rockaway residents with the skills and financing to launch small, worker-owned businesses that fill various needs in their community. According to the Democracy at Work Institute, Worker cooperatives have been shown to promote local economic development and to generate community wealth. In coops, profits go directly to workers instead of accumulating at the top or going to distant investors, and this makes a big difference in their impact on a community. This is especially true for underserved populations. Since most cooperatives are value-driven they tend to focus on the needs of their communities better than traditional, for-profit businesses.
Giron says the personal and community empowerment that comes with being involved in cooperatives is crucial to addressing the power imbalances that exist within the current economy. To date, her group has helped to launch four cooperatives, spanning from the sectors of construction to custom printing. There are two more in the works: a moving co-op and a childcare services co-op.
Moments of disaster and crisis often have silver linings. In this case, Hurricane Sandy awakened something in the community that had been dormant. And for Giron, the storm swept in a flood of solidarity and hope that has transformed her life for the better. "The most important thing for me has been the ability to help my community and to work with my community members," she says. "Before, when I had my prior job, I was earning money for myself and for my family, but that was only for us — that was only for me. Now with the work that I do I'm directly working with my fellow community members. And for me that's big because now I can help people to realize that their dreams don't only have to stay dreams, that they can be realized." 
SolidarityNYC, SolidarityNYC: Transforming Our City through Economic Democracy, article from Shareable - NYC Real Estate Investment Cooperative - Up and Go, platform cooperative
Trees, woodland and forest
DoTank, collective that carried out urban interventions in and around New York City between 2009 and 2011
Reclaiming Vacant Land in New York City
In 2010, in Brooklyn, New York, Paula Segal started to gather information about a vacant space in her neighborhood. It was empty for years, collecting garbage. After some research, it appeared the vacant, fenced lot was public, and had been planned as a public park — which was never built. After several community meetings and exchanges with the municipality, Myrtle Village Green was born as a community space. It includes a research and production farm, meeting space, and an open-air cinema.
Based on this first experience, Segal and other activists wanted to find out how many such vacant public lots existed. It turned out to be 596 acres, which became the name of Segal's initiative. Over the past six years, the grassroots organization reclaimed, remixed, and opened to the crowd public data about vacant lots through its Living Lots map. The map offers information about each lot and gives an avenue to chat with neighbors interested in doing something with it. "New community gardeners are contacting us because they are using the Living Lots map to explore what city-owned land is potentially available for community gardening," says Carlos Martinez, deputy director of Green Thumb, New York's program for community gardening that emerged to support civic use of land left vacant by the city's fiscal crisis in the 1970s.
However, the true strength of 596 Acres lies not only online: The organization also puts up signs calling neighbors to seize the land for their community. And it works. It has spurred the creation of 32 community gardens on previously vacant public land mostly in underprivileged neighborhoods that lack parks and community facilities. Another reason for the success of the organization lies in the productive relationship it has with local agencies for urban gardening: "With 596 Acres, we work closely with each other, they help us to find key people who have interest to be the steward or the leader of a community garden," says Martinez. As of January, more than 848 acres of vacant public land have been plotted on the map. 
News and comment
See separate article: New York City news
Mar 4 - 10 Circular City Week
May 4 TD Five Boro Bike Tour
September 20 - 21 People's Climate March
September 22 - 28 Climate Week NYC
August 25 Ecofest
Citizens data initiative
Vacant NYC, crowd-sourcing information about vacant buildings
Garden Geography: NYC community gardens in 2009/2010
Farming Concrete is an open, community-based research project started by gardeners to measure how much food is grown in New York City’s community gardens. Third and final NYC Harvest Report released in March 2013.