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The Urban Algae Folly gazebo at Expo 2015 in Milan, Italy, is covered in algae-filled ethylene tetrafluoroethylene plastic that may herald the future of green building. The spirulina in the plastic membranes absorbs carbon dioxide and produces oxygen while expanding more as sunlight intensifies to provide shade. 

A new peer-reviewed study shows that widespread use of algae in animal feed could help limit the rise in global temperature to 2°C by 2100 and possibly even turn back the clock, bringing atmospheric carbon concentrations down to pre-industrial levels by the end of the century. Algae-based feeds have proven to be equal to or better than other feedstocks in nutritional value and digestibility, and could free large swaths of arable land and simultaneously address food security issues in an era of rising demand for animal proteins.

Vivobarefoot is producing Ultra III, amphibious adventure shoes that contain Bloom's algae-based foam. Each pair of shoes will be composed of 25% algae foam that the company says help protect waterways by recirculating "57 gallons of filtered water back into natural habitats."

Green cleaning products company Ecover will launch an algae-based laundry detergent in Europe later this year. The product eliminates the need for palm oil, a common ingredient in traditional detergents.

Arizona State University Professor Peter Lammers and researchers at New Mexico State University are developing an energy-positive wastewater treatment method using a special kind of algae. The researchers believe that the algal systems ultimately could eliminate sewage farms' electricity bills, which can account for anything up to 60 percent of operating costs today, or even generate a surplus. 

Wastewater treatment and renewable energy production can be costly endeavors. However, if valuable chemicals could be extracted from wastewater, or if algae could more easily be used to turn carbon dioxide from the air into biofuel, companies could profitably pursue such projects. Researchers from Arizona State University (ASU) and the Chinese Academy of Science & Technology are working to make this possible.

The Los Angeles Department of Water and Power has now dumped 96 million balls into local reservoirs to reduce evaporation and block sunlight from encouraging algae growth and toxic chemical reactions. The balls are coated with a chemical that blocks ultraviolet light and helps the spheres last as long as 25 years.

According to a report issued this week by the NGO Mighty Earth, the U.S. meat industry is largely responsible for what has become the largest "dead zone" ever in the Gulf of Mexico. While past studies have showcased the meat and poultry sectors' impact on both the environment and public health, Mighty's study sheds light on the large agribusiness companies the NGO says contribute to the Gulf's ongoing environmental degradation attributed to algae blooms.

Nearly all ocean dead zones will increase by the end of the century because of climate change, according to a new Smithsonian-led study. But the work also recommends how to limit risks to coastal communities of fish, crabs and other species no matter how much the water warms.