Ideas have been proposed
to remove CO2 directly from the
atmosphere.
Iron Fertilization:
1.Supertankers
would spread millions of tons of iron over the ocean
surface.
2.The iron stimulates growth of algae which
consume carbon dioxide from the ocean surface as they
grow.
3.When
the algae and the organisms that consume them die, they
sink to the sea floor, taking the carbon with them.
4.The
ocean draws more carbon dioxide from the atmosphere to replace
what the algae took from its surface.
Carbon
Sequestration:
These
techniques would involve removing the CO2 as itŐs emitted from a power plant and either
injecting it directly into the deep ocean or burying it deep in the
ground.