Paris offers a model to bring swimming to Charles River

Air and water pollutants have an adverse impact on the health and well-being of citizens. Protecting the air and water, by increasing the usage of solar energy, can have a tremendous impact on reversing the impact of pollution on health. The Sunshot Initiative, launched by the Department of Energy, has already begun seeing improvements.

At the vanguard of initiatives to increase diversity among visitors to the National Parks are groups like Oakland, CA-based H.E.A.T.—Hiking Every Available Trail -- which uses social media and group park expeditions to increase minority groups' awareness, use, trust and enjoyment of the outdoors. Emerging alongside changes in policy—such as the Park Services' creation of a Diversity and Inclusion Office—, HEAT demonstrates how local organizers in minority and, often, urban regions around the U.S. are moving the presence of diversity at National Parks from rarity to normality, with studies and polls revealing the positive changes in attendance and interest.

Urban planners in Belgium are creating play spaces, known as the “speelweefselplan,” to give children more room to be outside. The design process includes asking schoolchildren about their routes to and from school, and then planners map out ways to make those routes more interactive. As cities grow and traditional parks are limited, this model shows a way that cities can continue to be welcoming for children.

Gathering Place is the name of a new park in Tulsa, Oklahoma. It is a large-scale creative park project that, rather than receiving funding from the local government, was funded entirely through a local philanthropic foundation. One goal of the park is to bring different areas of the city together--though it remains to be seen if this will work as well as if privately-funded public spaces are effective in the future.

The Anacostia, which has long been one of the most polluted rivers in the country, has been given a new lease on life, thanks to cleanup efforts and a recent sewer upgrade in D.C. Since water quality has improved, there's been renewed interest in waterfront recreation and development. Now local groups are working to mitigate displacement from gentrification, with some success.

San Diego residents may be seeing more placemaking projects, like murals or pedestrian plazas, because of a more streamlined permitting process. The city, notorious for making such projects difficult and expense to install, passed legislation and will be reviewing it to assess whether it should be expanded. San Diego has also created a fund that can help offset the costs of permit fees and other expenses.

After falling behind in urban planning and innovation in the 1990s and early 2000s, Oklahoma City created a limited-time sales tax called MAPS to pay for capital projects, like the new Scissortail Park. The tax consisted of a series of one-cent sales taxes and has brought in over $1.5 billion and has helped fund convention centers, other urban green areas, and more.

A new submersible machine produced by the Mote Marine Laboratory in Florida allows scientists to more effectively spot phytoplankton blooms which can cause red tide. This harmful algal bloom event can wreak havoc on ecosystems and the Programmable Hyperspectral Seawater Scanner is an improvement on an older model. While the maintenance cost can be high, scientists hope the instrument will be able to detect harmful algal blooms early in order to prevent outbreaks.

PHS LandCare, with support from the city, develops small vacant lots into mini-parks that bring people out of their homes and engage with their community. A 2018 study found that people living near LandCare lots reported a decrease in feelings of depression and a reduction in feelings of poor mental health. The city's role is important to the program’s success, especially in providing money to hire contractors to maintain the green spaces, especially local residents and formerly incarcerated people. Sites must be in low-income neighborhoods and near business areas, schools, and recreation centers.

The nonprofit Coombs Outdoors runs summer and winter camps for youth to experience and learn about the outdoors. The camps are in high demand because of the affordable price made possible by donor subsidies.