The kind of sunshades that are reasonably being proposed are not large enough to see from the earth without a very powerful telescope. A single giant megaproje

The kind of sunshades that are reasonably being proposed are not large enough to see from the earth without a very powerful telescope. A single giant megaproject sunshade is not feasible. But it is possible to make many smaller ones, each diminishing insolation by just a few fractions of a percent.