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A lamp that came from the bottom of the sea

  •  April 5, 2020

A lamp that came from the bottom of the sea

French biochemist Pierre Calleja has designed a fascinating lamp: while illuminating, it reduces CO2 emissions.

It works without any electricity, powered only by a tube full of seaweed. It is the algae photosynthesis process itself that powers the lamp. As they absorb CO2 from the air, they generate luminosity.


A single bulb can absorb about a ton of carbon from the air in just one year. It is the same amount as 150 trees. If these lamps were produced on a large scale, they could do much to combat climate change and reduce air pollution.

Interested? Here you know more about other Pierre Calleja projects involving technology and seaweed.

How Deep Sea Creatures Emit Their Own Light | The New York Times (April 2020)