Space Shuttle Need 1970's Foam?

In 1997 NASA caved in to the environmentalists and began using a new kind of foam for insulation on the space shuttle. The result? One blew up and the latest has serious issues. Nobody wants to spend much time talking about the foam switch since chlorofluorocarbons have been deemed evil. CFC's were an integral part of the foam that stayed attached through the stress of space flights over and over again. This post at Mike's Noise is a good discussion on the present situation including

The irony of this is that in 2001, the EPA exempted NASA from enforcement
of its freon regulations because an audit determined that the amount of freon
used by NASA was minuscule. But apparently NASA was more concerned with
public relations and with making sure that their policies received a nod of
approval from environmental groups. NASA's
official report on the Columbia disaster cited a change in the foam
application process -- and not the change in the foam itself -- as the most
sensible reason for the foam to start peeling off.

Recently, a NASA official was asked in an interview about theis very issue. He did a pretty good job of being evasive. Perhaps it's time for the MSM to turn up the heat a little. This was the first question I have heard address the foam change. More than likely it has been asked and I just missed it. It appears that it needs to be asked much more frequently.

Just a thought.