14-10-2019, 03:39 PM
371
Re: Greta Thunberg ... again
With regard to Dr Bellamy's quote, it may well be the case that our "doings" have a negligible effect on the climate. There are also some that suggest that we have actually slowed down global warming and that, left to nature's own devices, things would be far worse now.However, since the latter point seems not entirely convincing, then it would seem sensible to mitigate even the potentially negligible effect since even the smallest grain of sand can tip the balance.
Apart from that, there's only so many things left to burn. So we need to find ways of creating energy which doesn't involve setting fire to things!
As an aside, I'm not entirely convinced about how healthy it's been that much of the oil discovered has been in religiously and politically volatile countries.
14-10-2019, 04:07 PM
372
Re: Greta Thunberg ... again
There’s always the rain forest .
If there anything left to burn once it’s burned itself out and been made into pasture for multinationals to put cattle on.
14-10-2019, 04:15 PM
373
Re: Greta Thunberg ... again
Originally Posted by Dextrous63
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I think that it takes some kind of strange imagination to believe that digging up a load of coal and oil and burning them, ripping down a load of trees, and indeed covering large swathes of land with concrete, tarmac etc at the expense of plants which convert CO2 to oxygen etc (whilst supporting many kinds of wildlife) is unlikely to have a negative overall impact on the planet.
Head in the sand mentality .
Which is why they tend to talk through their neither regions
14-10-2019, 04:23 PM
374
Re: Greta Thunberg ... again
Originally Posted by Besoeker
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We have EVs now. In fact, they predate the IC engine.But you make a good point about recharging them. If they go mainstream, the grid and distribution systems will need to be beefed up. Considerably.
Sure, we can time the charging to be at periods of low demand. That may suit some. Where will the energy come from?
Currently, over 50% is CCGT. And we are importing from France at about the maximum capacity of the cross channel inter connector.
Wind is doing about 9%.
14-10-2019, 04:46 PM
376
Re: Greta Thunberg ... again
Originally Posted by Muddy
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Those wind turbines are huge I often wonder how long they take to pay for themselves .
Wind turbines produce no greenhouse gas emissions during their operation. It takes a turbine just three to six months to produce the amount of energy that goes into its manufacture, installation, operation, maintenance and decommissioning after its 20-25 year lifetime
I have no direct experience with them. I have designed systems for water turbines that have been going for longer than I have lived.
14-10-2019, 04:54 PM
378
Re: Greta Thunberg ... again
Originally Posted by Besoeker
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From Wikipedia:Wind turbines produce no greenhouse gas emissions during their operation. It takes a turbine just three to six months to produce the amount of energy that goes into its manufacture, installation, operation, maintenance and decommissioning after its 20-25 year lifetime.
14-10-2019, 04:59 PM
379
Re: Greta Thunberg ... again
Originally Posted by Dextrous63
->
With regard to Dr Bellamy's quote, it may well be the case that our "doings" have a negligible effect on the climate. There are also some that suggest that we have actually slowed down global warming and that, left to nature's own devices, things would be far worse now.However, since the latter point seems not entirely convincing, then it would seem sensible to mitigate even the potentially negligible effect since even the smallest grain of sand can tip the balance.
Apart from that, there's only so many things left to burn. So we need to find ways of creating energy which doesn't involve setting fire to things!
As an aside, I'm not entirely convinced about how healthy it's been that much of the oil discovered has been in religiously and politically volatile countries.
IMO the problem isn't just global warming. We are destroying habitats with pesticides and land stripping, ruining the ecosystem and damaging the Earth's crust with our mining and fracking. Acid rain is real, fish are being found with plastic in their stomachs, bee numbers are declining. Just a few examples, all caused by human behaviour and all definitely affect the planet.
It's like I said before, we are like goldfish in a tank. Everything we do affects how we live.
40 years ago we did not have the massive demand and supply of goods in our shops. Many people need a car to get around but who really needs a vroom vroom chelsea tractor? Now they are building yet more cars to change them to eco. IMO this is all wrong. It all comes down to the vortex shareholder wealth, the problem and the proposed solutions. None of it is really adding value. Added value is planting trees, keeping bees, putting pressure on food manufacturers, questioning the need for new consumables. Things we buy should last for decades not two or three years. There would be more jobs for all if we stopped the drive towards where we are headed right now and managed our expectations of what prosperity means.
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