A road full of bottlenecks: Dutch cycle path is made of plastic waste

Substitutes for city parking requirements are becoming increasingly popular throughout the United States. Rather than using off-street parking, many housing developers now provide residents with alternatives that promote reduced driving. This method is better for the environment and lowers the cost of housing in urban areas.

As Beijing grapples with pollution caused in large part by the increase in cars on the roads, a tech-based solution has appeared in the form of forward-thinking bicycles. The Chinese bike-sharing system, spearheaded by several startups, allows commuters to find a bike using GPS, pay for it using an app, and drop it off upon arriving to their destination, wherever that may be. A mix of private investment and government support has allowed this market to thrive.

Copenhagen is a highly livable city, thanks to policies that focus on making streets safe and convenient to walk. The bigger the city, the worse it is to design urban spaces only with cars in mind, says planner and architect Jan Gehl. His top advice is to gather data about people and their movements, making pedestrians as visible in city planning as automobile traffic.

Plastic is a leading cause of much of the world's pollution problem. But thanks to a discovery in a Japanese recycling center, scientists believe they may have identified a substance that can drastically reduce the amount.

In Eskilstuna, Sweden, there is a different kind of shopping mall – one that sells used and upcycled goods. In an effort to combat consumerism and bolster sustainability, the mall, called ReTuna, is nicely curated and organized, making second-hand shopping mainstream. The mall sees 700 people each day, on average, and has sold nearly $3.5 million worth of items.

As the U.S attempts to reopen, restaurant owners from California to Florida are expanding their restaurants into nearby outdoor space, including sidewalks and parking lots. In doing so, they are able to offer patrons a safer dining environment, as there is more room to keep tables further apart and follow social distancing precautions, and it also helps restaurants earn more revenue than if they were limited to indoor space. Some city governments are streamlining the process, including Brookhaven, Georgia, which made it free to access short-term permits for outdoor dining.

A pilot project in several American cities has provided a large amount of data on how residents use streets where vehicular traffic is restricted. The initiative tested out ways to calm traffic, provide space for families to convene and exercise, and provide safer bike lanes. A transportation analysis firm was able to provide detailed analysis for how each city responded to the changes, opening up ways for governments to "implement the best project for that specific need and measure against those goals."

An early-stage startup with big plans to change bicycling culture and commuting habits has notched one victory already, with its first secure-parking pods in New York City: Out of 60,000 times they've been used, the pods have only suffered one theft, at a time of rampant bike theft. Startup Oonee provides an alternative to locking up bikes and scooters on the street during work hours. Parking in an enclosed shelter is advertising-supported, so it's free to users. Ultimately, Oonee hopes to surround parking with a suite of services useful to two-wheeled commuters.

Fly ash bricks help reduce construction waste by utilizing the powdery by-product of burning coal. They are a green replacement for red clay bricks, which contribute to 5-15% of India’s emissions. They also utilize waste from coal-based thermal plants, which often gets disposed of by being dumped in water bodies and on roadsides. In comparison to red clay bricks, fly ash bricks are less expensive and the production process doesn’t emit smoke or use the more fertile top soil. Their use has been mandated by some regions and about 150 small fly ash enterprises have emerged.

Securecycle is a nonprofit working to reduce the number of young students not attending school in Ogun State, Nigeria. The organization collects old jeans to turn into bags and finds students who are, or will likely, drop out of school to teach them bag production and give them a scholarship to finish primary school.