 ... Greenhouse gases are accumulating in Earth's atmosphere as a result of human activities, causing surface air temperatures and subsurface ocean temperatures to rise. Temperatures are, in fact, rising. The changes observed over the last several decades...  National Academy of Sciences' Review of the U.S. Climate Change Science ...by United States. Congress. Senate. Committee on Commerce, Science, and Transportation - 2006 - 38 pagesFull view - About this book
 | United States. Congress. Senate. Committee on Energy and Natural Resources - 2001 - 72 pages
...changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability. Humaninduced warming and associated sea level rises are expected to continue through the 21st century.... | |
 | United States. Congress. Senate. Committee on Energy and Natural Resources - 2001 - 76 pages
...observed over the last several decades are likely mostly due to human activities, but we cannot rule put that some significant part of these changes is also a reflection of natural variability. Humaninduced warming and associated sea level rises are expected to continue through the 21st century.... | |
 | 2002 - 278 pages
...changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability. Human-induced warming and associated sea level rises are expected to continue through the 21st century.... | |
 | United States. Congress. House. Committee on Science - 2002 - 136 pages
...changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability." This is the third sentence in the summary at the very beginning of the report. The entire report, available... | |
 | Gaylord Nelson, Susan M. Campbell, Paul A. Wozniak - 2002 - 222 pages
...changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability." 36 What other evidence is there that the climate is warming? Climatologists say the 1990s are noted... | |
 | United States. Congress. Senate. Committee on Environment and Public Works - 2004 - 224 pages
...changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability." The increasing global temperatures will have many consequences, often adverse in the long run. Because... | |
 | David G. Victor - 2004 - 184 pages
...changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural vari[138] ability. Human-induced warming and associated sea level rises are expected to continue through... | |
 | Warren M. Washington, Claire Parkinson - 2005 - 372 pages
...changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability. Human-induced warming and associated sea level rises are expected to continue through the 21 st century.... | |
 | United States. Congress. Senate. Committee on Energy and Natural Resources - 2005 - 244 pages
...changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability." Carbon dioxide can remain in the atmosphere for many decades and major parts of the climate system... | |
 | Carol Reeves - 2005 - 152 pages
...changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability. Human-induced warming and associated sea level rises are expected to continue through the 21st century.... | |
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