IPCC: Anthropogenic Climate Change 'Very Likely' Exists

The Fourth Climate Assessment by the IPCC strengthened the Panel's stance on climate change, stating: “Most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas concentrations". As far as 97% of scientists were concerned, as of this point, climate change was happening, although the extent was still unknown.

2007 – 2007