On the PBS show "Nova" tonight...

they did a show on solar power. They pointed out several times that
solar's main problem is that it is dark half of the time (not counting
clouds). There was a lot of stuff about how it could be worthwhile to
use solar during the day, and just use grid power at night. Hey, it
still reduces fossil fuel use, reduces greenhouse emissions, and maybe
even save money... maybe. There was interesting stuff going on in
Germany, and outside of Las Vegas.

I kept waiting for them to talk about powersats. Waited in vain.
They never did. When the one guys said "the sun doesn't shime all the
time" I thought that was a perfect time to point out that yes it does,
we just aren't always pointed at it. This would have been the perfect
time to go into powersats, soaking up the sun 24/7/265.25. But no.
They also didn't mention how all those dark solar cells reduce the
Earth's albedo, causing the Earth to absorb more heat.

And you know, that albedo thing, together with powersats, well it got
me to thinking. Why not make rectennas shiny? And use some (say,
10%) of the electricity for carbon sequestering. The shiny rectennas
will reflect sunlight back into space, and the sequestering will
actively reduce greenhouse gases. Now, this sequestered carbon would
be buried away someplace (old oil wells and coal mines, perhaps), and
any carbon extracted for anything else (synthetic hydrocarbon fuels
and such) would have to be extracted above and beyond that.