The major source of photochemical smog - petroleum-fueled vehicles - can be replaced by emission-free electric vehicles.

What is needed now is a transformation of the major systems of production more profound than even the sweeping post-World War II changes in production technology.

What is new is that environmentalism intensely illuminates the need to confront the corporate domain at its most powerful and guarded point - the exclusive right to govern the systems of production.

After all, despite the economic advantage to firms that employed child labor, it was in the social interest, as a national policy, to abolish it - removing that advantage for all firms.

Nothing ever goes away.

All of the clean technologies are known, it's a question of simply applying them.