Fitch R. Williams writes:

. They flew
with 11 times the foam falling off, when none at all was supposed to
fall off, after they changed the adhesive that they used to have for
several years before they lost the Columbia.

No, not the adhesive, the foam itself. Environmentalism forced a change of
the foaming process from using a CFC agent to something more
"environmentally friendly" (and structurally inferior). If someone is
claiming otherwise, it betrays a political agenda. Environmentalism
destroyed Columbia.