Micro-algae lamps not only light an area at night, they also save electricity and absorb CO2 and release oxygen. Starting with the most polluted areas of the country, installing these lamps could greatly reduce CO2's disastrous effects on our environment. This is just one step that could have a dramatic impact on the health of the environment.
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https://www.youtube.com/watch?v=2X6KaKVTweg