by Rachel Armstrong
"In this age of deep ecological design aspirations, the range of speculative design projects based on algae technology is growing. Algae are imagined to provide a whole range of solutions, from energy-producing architectural towers, to lights, burgers, skin care products, animal feed, drug factories and bioplastics. It finally appears that the world is turning green.
Algae, simple photosynthetic plants that live in water, are among some of the oldest living organisms on earth.
Most species can only be seen with a microscope, but others can form dense mats of vegetation or large underwater forests. During the Archean period, between 3.9 and 3.5 billion years ago, blue-green algae* set the preconditions for modern life by changing the earth’s atmosphere, which was choked with poisonous gases, and turning it into an oxygen-rich environment. Their modern-day descendants can use a range of pigments to harvest specific wavelengths of light to form solid plant matter, or ‘biomass’, by using sunlight and carbon dioxide to produce fuel, water and oxygen..."