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" The observed increase could be largely due to this natural variability , " the scientists concluded.But by 1995 that possibility had all but vanished : " The balance of evidence suggests a discernable human influence on global climate , " the second IPCC report concluded.Six years after that : " There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities . " Dahlia Lithwick , the sharp-eyed legal affairs columnist for the online magazine Slate , called it Roberts 's " whole sweet / funny / smart / humble thing " and wrote that the chief justice " sees that the press can be gamed to disseminate a view of judging and the judiciary , and the clarity and effectiveness of his message is indisputable . " In his day , the late congressman Thomas D'Alessandro Jr ., from Baltimore , Md ., saw presidents Roosevelt and Truman at this rostrum.But nothing could compare with the sight of his only daughter , Nancy , presiding tonight as speaker of the House of Representatives.Congratulations , Madam Speaker.Two members of the House and Senate are not with us tonight , and we pray for the recovery and speedy return of Senator Tim Johnson and Congressman Charlie Norwood.Madam Speaker , Vice President Cheney , members of Congress , distinguished guests , and fellow citizens : This rite of custom brings us together at a defining hour - - when decisions are hard and courage is tested . Japan 's early history is lost in legend . Although its constitution forbids the maintenance of armed forces , Japan has a sizable military capability for defensive warfare .