Businesses lend support to Clean Air Act

Traditionally, the relationship between the U.S. Environmental Protection Agency and American business has been turbulent, marked more often by conflict than collaboration.

That may be changing.

The emergence of green energy into the mainstream and efforts by business to embrace sustainability appears to have led to a thawing in relations between the two camps. This is reflected by today's news that organizations representing more than 60,000 U.S. businesses are planning to pledge support for the Clean Air Act, which turns 40 this year.

The groups have expressed concern that the EPA's half-year delay of pending ozone, or smog, rules will be costly to U.S. companies. They have cited the delay of an ozone pollution rule "will result in sick workers and family members, resulting in lost workdays, lower productivity and other adverse bottom-line impacts for companies," according to a statement.

A press conference is planned Wednesday. Streaming audio will be available at 1 p.m. at