Bioluminescence (生物发光) is a natural phenomenon wherein a chemical reaction within an organism’s body produces light. It can be found in many places in nature — fireflies, some mushrooms — but mostly in the deep sea.
Recently, Rambouillet, a small historic French town, has teamed up with a company called Glowee to turn the city into a full-scale bioluminescence laboratory. The goal is to change the way in which cities use light. The company uses marine (海的) bacteria harvested from the coast of France. It makes some of the town’s public light up in the cool blue of bioluminescence.
These bioluminescent bacteria are stored in a seawater filled tube, giving the bacteria room to float around and light up. The light provided by the bacteria is part of their natural metabolism, so producing the light requires no energy other than that which is needed to feed the organisms. This makes it much more environmentally friendly and sustainable than electric light, which consumes a huge amount of non-renewable energy.
“On the way to lighting up the world with bioluminescence, you have to feed the bacteria and add water as they grow. That’s not so easy. The phenomenon will be very temperature-dependent and I doubt that it will work in the winter. Also, bioluminescence is not very bright compared to electrical lighting, though they have improved the light intensity,” Carl Johnson, a professor from Vanderbilt University said.
One potential solution to these issues — and one that Glowee is looking into — is to remove the biological aspect of the whole process. Theoretically, luciferase (荧光素酶) can be removed from the bacteria and used to create light instead of the bacteria itself. Because luciferase is non-living, it doesn’t need to be fed. Creating new means of sustainable lighting is a way of being environmentally friendly without plunging the earth back into darkness.
【小题1】What do we know about Glowee?| A．It is an ancient laboratory in France. |
| B．It solves power shortages in coastal cities. |
| C．It adopts bioluminescence as a light source. |
| D．It feeds marine organisms to produce chemicals. |
| A．The reasons for energy waste. |
| B．The advantages of the marine bacteria as light. |
| C．The living conditions of the bioluminescent bacteria. |
| D．The difficulties of storing bioluminescent organisms. |
| A．The bacteria work more efficiently under low temperatures. |
| B．It will cost too much to improve the luminescence intensity. |
| C．The application of bioluminescence enjoys a bright prospect. |
| D．The development of bioluminescence faces many challenges. |
| A．A Historic Town Lit up by Nature |
| B．The First Zero-carbon City in the World |
| C．A Reform of Producing Electricity in Cities |
| D．The Discovery of Luciferase in Marine Bacteria |
