On climate change
As a scientist, I keep one eye on the scientific press regarding climate change. As far as I can see, studies have revealed that it is a natural phenomenon exacerbated by human activity.

The problem is that there are so many inter-related factors (CO₂, methane, water vapour (which is a more potent greenhouse gas than carbon dioxide!), cloud cover, solar forcing, airborne particulates) and so on.

What it boils down to is that we are probably responsible for the acceleration in global warming, but no-one knows by how much, nor indeed what the rates will be in the future.

In theory, one major volcanic eruption could cause enough cooling to wipe out the effects of the last 100 years of global warming.
( K2k6 has a proper job these days, Tue 23 Dec 2008, 10:58, Reply)