Courtesy Wikipedia CommonsSkeptics of human-induced climate
change have long pointed to a lag between an increase in
temperature and a rise in atmospheric carbon dioxide at the end
of the last Ice Age as suggesting that carbon dioxide is an
effect of rising temperatures, not a cause. This lag, however,
was based on evidence from only one place on Earth - ice core
records from Antarctica. A much more extensive study of paleo-
temperature records from 80 sites around the world just
published in Nature reveals that global temperature increases
followed rises in the carbon dioxide concentration in the
atmosphere. Carbon dioxide is a heat-trapping gas that can drive
climate change. This study greatly substantiates climate
scientists who point out that the enormous quantities of carbon
dioxide that human activities are putting into the atmosphere
will result in dramatic changes in global climate if they are
not curtailed.