Carbon dioxide collector

(speculativity warning)

Micro airships

• have a very lightweight bubble as main body in a size range between 10um and 10000um
• use hydrogen as lifting gas
• use their surface for harvesting of solar energy
• are capable of water capture and splitting for compensation of hydrogen diffusion loss
• may be capable of carbon dioxide capture ond splitting
• may be capable of self replication
• may (if malicious) create some nasty gasses

good ones and bad ones

Good ones are not self replicating maybe drop the extracted carbon down in form of graphite chips stop carbon extraction at a certain level and care about their fate after their end of service. They may also watch out for bad ones. Bad ones use the extracted carbon solely for self replication and at some point start to produce nasty gasses like Cyanide NOx suddenly and in huge amounts

To investigate:
If replicative how fast could they replicate (doubling time) depending on diameter?
What is the limiting factor solar-power for hydrogen generation, dilutedness of CO2 ore something else?

To investigate: Can they be made to actively navigate?