RedOrbit: Scientists have long believed that a continental ice sheet formed more than 90 million years ago during the Late Cretaceous Period. During that time, the climate was much warmer than it is today. A new study from the University of Missouri (MU) has found evidence suggesting that this belief is incorrect, that no ice sheet formed during this time. The findings of this study, published in the journal Geology, could help environmentalists and scientists predict what the earth`s climate will be as carbon...