Original sentence: Climate models will never be able to predict the future climate until they can predict solar and volcanic activity.Climate science can not make definitive predictions yet, since the computer models used to make these predictions are incredibly simplistic (compared to the complextity of the Earth's climate systems) and do not yet take into account recently discovered feedback mechanisms.Some also say that if global warning is real and man-made, no action need be taken now because:.There are many reasons given for opposition to the anthropogenic global warming theory and some of these major positions are independent of each other:.They believe more weight should be given to data such as paleoclimatic studies, temperature measurements made from weather balloons, and satellites which show less warming than surface land and sea records and less warming than some climate models have predicted.They frequently characterise supporters arguments as alarmist and premature, so as to emphasise what they perceive as the lack of scientific evidence supporting global warming scenarios.They tend to state that climate science is not yet able to provide us with solid answers to some of the major questions about the global climate - for example, the extent to which human influence affects climate
Edited sentence: Climate models will never be able to predict the future climate, until they can predict solar and volcanic activity.Climate science can not make definitive predictions yet, since the computer models used to make these predictions are still evolving and do not yet take into account recently discovered feedback mechanisms.Members of this faction give more weight to data such as paleoclimatic studies, temperature measurements made from weather balloons, and satellites which they claim show less warming than surface land and sea records.Opponents also say that if global warning is real and man-made, no action need be taken now because:.Opponents frequently characterise supporters arguments as alarmist and premature, so as to emphasise what they perceive as the lack of scientific evidence supporting global warming scenarios.Opponents tend to define themselves in terms of opposition to the IPCC position.Some items in this list may contradict others:.There are many reasons given for opposition to the global warming theory and these major positions are independent of each other.They generally believe that climate science is not yet able to provide us with solid answers to all the major questions about the global climate