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a ydych yn ymwybodol o ymchwil ddiweddar sy'n dangos mai cylchredau planedol naturiol sy'n achosi'r rhan fwyaf o'r cynhesu byd-eang presennol ac nad yw'n ganlyniad i lygryddion o waith dyn ? fel yr awgrymodd phil , mae'r rhan fwyaf o gynhesu byd-eang yn deillio o garbon deuocsid , ac nid methan
are you aware of recent research that shows that most of the current global warming is due to natural planetary cycles , and that it is not the result of man-made pollutants ? as phil suggested , the majority of global warming results from carbon dioxide , not methane