TJinPgh wrote:Glad somebody else chimed in about water vapor as a greenhouse gas. Which, as an aside, I always found interesting when people start talking about hydrogen fuel cells. They tout that water vapor is the only emission, ignoring that it is a greenhouse gas.
This is true ... it is also true that water vapor can
easily be condensed into pure water at the exhaust pipe which
is something that the world needs. Essentially it's a greenhouse gas that can be easily made inert. My personal belief is that hydrogen will be the fuel of the future, but we have to learn not to visualize "Hindenburg" when people say hydrogen. It
can be safely handled and offers the "immediate" refuel that we've grown to be accustomed to. It is clean, stores relatively well and is one of the most abundant elements in the universe.
I find it somewhat humorous that so many get so bent out of shape on the energy/environment issue. Science has only been able to study the atmosphere on a global scale for about 40 years. Some of the known cycles have periods in excess of 20 years. It's like trying to save a ship from sinking by turning a valve, yet we don't know if the valve lets water into or out of the boat, and turning that valve doesn't make an obvious difference. More study is indicated before any conclusion either way can be justified.
I suggest being frugal in your use of energy (to save $$$ if nothing else) and remember ... one of the reasons that we hear more about the natural disasters that happen in the world is because for the first time in history, we have been able to let everyone know immediately about those disasters. Finding out within minutes or the same day is very different from finding out what happened weeks, months, even years ago, if we ever found out at all.
Communication technology is what has altered our perception of these events.