Global Climate Change - Part II Previous Climate Changes

In the first of these articles on the effects of climate change, several
exaggerated scenarios were offered as ‘worst case’ climate change outcomes.
For the most part, the scientific community dismisses these as hype and
propaganda; at the same time, some experts offer us insight into the real,
probable outcomes of climate change. How does the community of experts
go about separating the hype and hysteria from the probable and predicable?
In a word, history.

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Global Climate Change Part I - An introduction

As the Earth’s climate changes, new stresses will be placed on the planet’s
resources and those who are tasked with managing them. The available data
indicates that the global climate has warmed by approximately 0.74 °C (1.3 °F)
over the past hundred years, from 1906-2005 . Furthermore, many scientists
predict that the Earth’s average temperature could rise an additional
1.4 °C (2.5 °F) or more in the coming century. A great deal of attention has
been paid to what contributing role human activities may be playing in this
temperature rise; greenhouse gases, most specifically carbon dioxide (CO2),
produced as fossil fuels such as oil and coal are burned are cited as the major
drivers behind this temperature rise. In an effort to counter the trend, nations
began to propose reductions in greenhouse gases; at the Kyoto conference of
1992, specific greenhouse gas reduction targets were set for many
industrialized nations aimed at an overall reduction of 5.2% by 2010. The
Copenhagen conference, planned for 2009, is expected to push these target
reductions even further.

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