Independent: The cable news network CNN has sacked its science team, and one of the consequences has been a number of embarrassing programmes about how the exceptionally cold weather in North America this winter contradicts global warming and supports the idea that we are actually due for or a period of global cooling, if not a full-blown ice age. “And tonight, last year, one of the coldest years in American history. Is it evidence that global warming is being overstated? Or are we headed toward a …