Bling from the Depths, Bling from the Skies

Let's say we move ahead after all with carbon capture and storage plans. Instead of just storing all that carbon underground, why not build a giant hydraulic press in each carbon cave and squeeze the captured carbon into giant diamonds? We could then sell those diamonds on the world market for big $$$. "We're putting the squeeze on climate change!" could be the program's slogan.

Alternatively, if we could master force field technology, we could surround the earth in a spherical force field and slowly decrease its size, gradually crushing our own atmosphere until the excess carbon is squeezed out. Imagine, a rainfall of diamonds that covers the whole planet!