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.