have claimed that there is a scientific consensus on the subject. According to their latest report, scientists are 90% sure that over 50% of the observed global warming in recent decades is human-caused, and that continued global warming could be expected to raise sea levels by one foot over the next century. | have claimed that there is a scientific consensus on the subject. According to their latest report, scientists are 90% sure that over 50% of the observed global warming in recent decades is human-caused, and that continued global warming could be expected to raise sea levels by one foot over the next century. |