The White House climate commitments are another set of incoherent goals

Johnson & Johnson, Intel and Hershey's are among 81 big firms pledging to curb emissions. But are they prepared to shift the national debate on climate change?

Another day, another set of climate promises from big business.

At the White House on Monday, the chief executives of five companies - Johnson & Johnson, Intel, Hershey's, PG&E and Berkshire Hathaway Energy - expressed support for government action to curb climate change, joining dozens of big firms that pledged to curb their own greenhouse gas emissions.