- 26 Oct 14, 07:39#422548There's no doubt the world is in trouble because of greenhouse gases. Humans are currently transferring 35+ Billion tonnes of CO2 from terrestrial locations into the atmosphere.
The sad thing I get from reading this thread is the lack of understanding of the problem, and therefore understanding what needs to be done.
There is the "here and now" and there is the "future". We need to take positive steps now and for the future.
Let's be clear about electricity and charging batteries. When you derive your battery recharge by plugging into the grid, you have just added to the biggest contribution made to CO2 to the atmosphere from coal and the power generation industry. That is the fact of things today. Therefore, charging cars via the grid adds to the CO2 in the atmosphere - that is an immutable fact, so today's electric cars are nowhere near true zero emissions.
The short term solutions are to reduce emissions as much as possible and to have a plan to reverse emissions. If we only went down the electric path, and someone was magically able to replace all electrical power generation with solar, wind tidal power, the reality is we are still in dire trouble. We are in that dire trouble because we have already passed the tipping point. Global warming is happening, and, even with zero car and factory emissions, C02 conversion from terrestrial to atmospheric will now continue unabated even with zero human emissions. As I said we have already crossed the tipping point. Plus the reality is, we will go beyond that tipping point for quite a while with any solutions taking years, perhaps decades to take effect and come on-stream.
The permafrost is already defrosting and will continue - that's a fact. Under the permafrost is a carbon reservoir of 3 to 4 times the total carbon stored in all the vegetation on the planet today. And, once defrosted, it will decompose thereby releasing directly into the atmosphere or via streams into the atmosphere. Ever increasing the amount of CO2 in the atmosphere.
There needs to be a solution to reverse the CO2 we have pushed into imbalance in the atmosphere. Carbon negative solutions need to be sought asap.
Would growing forests back be the solution? Short answer is no. Forests are good, but also have a negative impact. Their negative impact is their excellent ability to absorb heat, thus adding to the "heating" of the planet. What we need is to maintain and recover the frozen sectors of the planet. Some excellent research being done in Russia, headed by Sergei Zimov, well worth a read for anyone interested.
I commend companies like Google, Audi and, now even Mercedes (a member of ASFE), getting behind biofuel research. Audi of course making major advances, eg their March 2014 announcement that their biofuel exceeded fossil fuel combustion while meeting their zero target.
IMO Without negative emission goals we cannot succeed - the quicker we get them underway the better.
"He was the fastest driver I ever saw - faster even than Fangio"
________________________- Mike Hawthorn on Alberto Ascari