I read in the newspaper that scientists have figured out another way to trap CO2 under the sea from the atmosphere.
The research goes that as the ice caps are melting, there seems to be tiny iron particles in the ice which are melted back into the ocean.
The algae then "eats" the iron particles and blooms, resulting in them rising to the surface of the sea.
The risen algae photosynthesises and takes in Carbon Dioxide.
The algae then sinks to the ground, and stays there for a couple of hundred years!
Well, it seems that the Earth is trying to help itself, and that the CO2 which is taken in from the algae is actually a large proportion.
However, scientists and researchers are figuring out whether they should place tons of iron into the sea, making the algae bloom and thrive to the surface of the sea. Good idea it seems.
But they are worried that the placing of iron in the sea will destroy the natural ecosystem. More iron particles means more algae, which means more fishies that thrive on algae.. and etc etc...
What shall we do?!
Seems a pretty good idea.. but the ecosystem!
However it's done, I think sequestration is one of the few suggestions that makes any sense as through various carbon trading schemes it should be self-financing and it just needs someone to go ahead and do it. No need for several billion people to change their behaviour to make it work.
Could also start by using the algae for biofuel generation to wean people off fossil fuel which should generate greater funds for investment and as capacity increases, start sequestering. Simple sequestration funded by selling carbon credits could maybe take longer to get going.