The biosphere is always fascinating for inventors, always looking for the solutions adopted by flora and fauna: biomimicry is a great stimulus to progress (and sustainability) of technology. In this case we are talking about vegetable nanobionics, a fascinating field that translates into a solution: ecological lighting.
In the small town of Rambouillet, near Paris, there is a row of street lamps powered by living organisms: and more bioluminescent objects are expected to be installed in the coming months.
The inspiration for this concept of using natural lighting (and not the sun) comes from the French startup Glowee, which has created special saltwater tubes with bioluminescent bacteria to provide public places with decidedly atmospheric light.
The bioluminescence
The production of light in living things is a phenomenon observed on land and in water. According to with the BBC , is present in the 76% of deep-sea creatures as well as in fireflies, fish and mushrooms.
I told three years ago the first steps of Glowee, which harnesses the gift of light from a marine bacterium called Aliivibrio fischeri. He collects it off the coast of France and grows it in marine aquariums before moving it to these special tubes.
There is no need to draw energy from an electricity grid. To keep the system "alive" (it should be said) you just need to feed the bacteria (basic nutrients and oxygen). This is a much, much greener alternative to all the fossil fuels used to make or run any light bulb.
How do bioluminescent lights turn off?
Where is the switch for the bioluminescent lights? To turn them off, operators can simply “pause” the oxygen that feeds the bacteria. This puts organisms in an anaerobic state in which metabolism, which goes hand in hand with bioluminescence, does not proceed.
Sandra Rey, founder of Glowee, notes that these organic lamps are less expensive and less polluting. They also use less water than is needed to produce LED lights. The company is in talks with 40 cities in France, Belgium, Switzerland and Portugal to turn on these lights everywhere.
Obviously this news certainly does not mean that bioluminescent lamps are already a perfect replacement. They must be "powered" at least once a month, if not more, they are not as bright as an LED and are sensitive to sudden changes in temperature. In other words, they are living. Glowee is working on improving them, and in any case there are many possible fields of application.
In general, it would be nice for cities to change the very world in which they use light: having more relaxed atmospheres and nanobionic systems would inspire people to be more respectful of the environment and biodiversity.
Overall, bioluminescent lights are an option that could also help reduce light pollution, and less disturb the natural behavior of many animals. For me it's a YES.
