...the first half of the 20th century. The conclusion (IPCC 2001a) is drawn that "In the light of the new evidence and taking into account the remaining...the increase in greenhouse gas concentrations." In addition it is stated that "it is very likely that the 20th century warming has contributed significantly...

...short, the globally-averaged temperature is rising and the best available evidence to date suggests that most of the observed warming over the last 50 years...to the increase in greenhouse gas concentrations. A recent study by the National Academy of Sciences (NAS) on climate change supports this theory. However,...

...10,000 years. The World Bank's work on climate change is predicated on IPCC's report that concludes that "most of the observed warming over the last 50 years...to have been due to the increase in greenhouse gas (GHG) concentrations." About 75 percent of the cumulative GHG emissions during the past 150 years have...

...do not exclude the possibility that other forcings may also have contrihuted [Insert Figure 4 here] In the light of new evidence and taking into account...uncertainties, most of the observed warming over the last SO years is likely7 to have been due to the increase in greenhouse gas concentrations. Furthermore,...

...climate."2 The Third Assessment Reports, approved in early 2001, found even stronger evidence and concluded, "most of the observed warming over the last 50 years is likely to have been due to the [human-induced] increase in greenhouse gas concentrations" (italics added).3 The IPCC offers convincing...

...greenhouse gases causing climate change? The IPCC's conclusion that most of the observed warming of the last 50 years is likely to have been due to the increase in greenhouse gas concentrations accurately reflects the current thinking of the scientific community on this issue. The stated degree...

...and the best available evidence to date suggests that most of the observed warming over the last SO years is likely to have been due to the increase in greenhouse gas concentrations. A recent study by the National Academy of Sciences (NAS) on climate change supports this theory. However,...

...do not exclude the possibility thai other forcings may also have contributed. [Insert Figure 4 here] In the light of new evidence and taking into account the remaining uncertainties, roost of the observed warming over the last 50 yean, is likely7 to have been due to the increase in...

...warming world and modeling studies indicate that most of the observed warming at the Earth's surface over the last 50 years is likely to have been due to human activities. Globally, the l990s were very likely to have been the warmest decade in the instrumental...

...climate processes and their incorporation in climate models have improved, including water vapour, sea-ice dynamics, and ocean heat transport." The vast...to the increase in greenhouse gas concentrations. Statement of Richard Lindzen, May 2, 2001 Page 5 of 5 In point ot fact, there may not have been any...