We need to spend money on this type of research since these articles keep saying it we've come too far. > Also, think about how much of the Earth is covered in

We need to spend money on this type of research since these articles keep saying it we've come too far. > Also, think about how much of the Earth is covered in plants that already do this -- I'm doubtful we could come up with something that could match the current CO2->O2 capacity of all the Earth's plants and algae. We need to make up the delta not replace what's there.