Meet Greece's Marine Trash Collectors Diving To Keep Their Sea Beautiful

Farmers in Vietnam face rising sea levels but rejected the city's water engineering projects. They prefer gradual measures to cope with climate change so scientists have allowed the farmers to steer the conversation.

Seaweed is a sustainable and nutritious food source, which could be a solution to feeding a growing global population—the tricks getting people to eat it. Several Dutch companies are serving up seaweed in familiar formats like burgers, pasta, and falafel to make it an easier sell. They're also pioneering infrastructure to make farmed seaweed affordable.

What do you get when you combine the efforts of an engineering company with an energy company? In the Netherlands, you get a new type of environmentally sustainable roads. PlasticRoads, a piloted initiative in the city of Zwolle, uses discarded plastic to build bike paths that help cut down on plastic waste.

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 Jamaica, locally-led coral nurseries are working to restore the coral reef that have been lost to natural and manmade disasters. These organizations have small coral gardens where they can grow free of danger and when they’re big enough, are transported to a reef. With coral and fish being so codependent in the underwater ecosystem, the regrowth of coral has meant an increase of fish and fishing for the country, which many people rely on for their livelihood.

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.

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.

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.

Residents of North Cove, Washington, are rebuilding their eroded coastal beaches with a form of dynamic revetments in which long cobble berms are deposited along the beach. The rocks cause waves to slow and drop sand instead of crashing into the coastline and eroding it.