CNBC News Corrections

Smoke billows from the chimneys of Belchatow Power Station, Europe's biggest coal-fired power plant, in this May 7, 2009, photo.
The hollow promise of net-zero carbon pledges

Correction: An earlier version of this story misstated the name of the organization that did research showing less than 5% of offsets reduce CO2. The organization is called the Taskforce on Scaling Voluntary Carbon Markets.