  We argue that geostationary (GEO) reflective containers filled with $CO_2$
could be used as shading devices to selectively cool areas on Earth's surface.
This proposal would be an interesting addition to the recently discussed
suggestion of dumping $CO_2$ to space through the well of a space lift
\cite{OB2023}. We also explore the possibility of producing propellants in GEO
out of greenhouse gases expelled from the space lift. Finally, we discuss the
much less effective idea of filtering the most prominent infrared bands of the
incoming solar radiation using the $CO_2$ wrapped in transparent vessels.
