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kzb

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  1. It's probably more incredible than 90% of the stuff I am told in Wetherspoons. The fact that the world is embarked on producing many millions of EVs with no proven, established route for recycling the batteries. Just a vague hope that someone will come up with a solution sometime in the future. I don't doubt that somehow it will be possible, given enough energy and resources. But what if the energy and resources required negate the supposed environmental benefits of the EV up to that point? Current ideas seem to revolve around chucking the thing in a furnace, melting it all down and extracting the metals (what about the graphite and plastics?) It seems that no-one really knows, which is disgrace.
  2. 31 July was the UN deadline for nations to report their action plans for emissions reductions in preparation for COP26. China has failed to report an action plan.
  3. In 1971 the world population was half what it is today. The population increase has been particularly marked in the areas we hear so much about when something happens, e.g Australia, California. People didn't tend to build villages in the middle of the woods. Every man and his dog now has a camera, which they didn't in 1971. By far the biggest bushfires in Australian recorded history occurred around this period, but here in Britain we neither knew nor cared. It was bushfires in the wilderness, it was something that happened.
  4. I'm sorry but this is just incredible.
  5. I guess not, but we are a long way off completely closed-loop recycling. Recycling takes energy, the more recycling you do the more energy needed. So we also need energy sources which have zero environmental impact, and I don't think there are any. Extracting the lithium from an automotive battery is about five times as expensive as mining and refining that same weight of lithium. As far as I can see, only 5% of lithium batteries are recycled. Someone in Wetherspoons said they are just being dumped, and from what I've found via Google that could be true. In other words we are foisting this technology on the world before it has been properly worked out how to recycle the things. It's just occurred to me also, if it isn't yet known how to do this economically, that means no-one knows how much energy it consumes. So how can that have been included in the lifetime CO2 emissions?
  6. There is that clue that the Vietnam war was on. Fifty years ago, 1971. The point is, people point to every extreme weather event and shout Climate Change. But they had a bad time with the weather in 1971 and the scientists said it was Global Cooling.
  7. Guess The Year: Montreal’s “Storm of the Century” In Ethiopia 300,000 died in the two year drought. A further 150,000 were affected in Kenya in one of the worst droughts on record there. Drought also severely impacted Iraq, Iran and Afghanistan, while monsoon failure in India was one of the worst since records began in 1876. The Sahel was in the middle of a terrible drought. Drought conditions however extended well beyond that particular part of Africa, across a broad swathe of the Middle East and India. Scientists at the time explained that these long term drought conditions were the direct result of global cooling, which squeezed the tropical rain belts closer to the equator. Texas endured its worst drought since the 1950s, while Florida’s drought was the worst on record, with wildfires destroying 400,000 acres in the Everglades. California, Maryland, North Carolina, Minnesota and even Hawaii also suffered from major droughts. North Vietnam was hit by one of the worst floods of the 20thC. Because of the Vietnam War, little news of the Red River flood emerged at the time, but it left behind 100,000 dead. 19 died in flash floods in Barcelona after 308mm of rain fell in 24 hours Ginger is on record at the time as the longest lasting Atlantic hurricane ever. An unnamed storm in August attained hurricane status further north than any other North Atlantic tropical cyclone. Baltimore was struck by one of the most damaging thunderstorms in 50 years, with 14 dead from the resulting floods. In the same month, widespread flooding followed Tropical Storm Doria up the coast from N Carolina to Maine. In August too, Alaska suffered one of its worst floods on record. Extended flooding occurred in September and October, affecting Texas, Louisiana and Oklahoma. And to finish the year off, Oklahoma was again hit with significant flooding, along with Arkansas.
  8. On the other hand it is clear the climate sensitivity to CO2 has been seriously overestimated in the models. Also the land area of the planet has actually increased. The 1960's atmospheric bomb tests put a massive pulse of carbon-14 into the atmosphere. Plotting the decline of this concentration (and correcting for the extra dead carbon put into the atmosphere in the same time period from fossil fuels) enables the mean lifetime of a CO2 molecule in the atmosphere to be calculated. Seven years -I think (from memory).
  9. Sadly I think you're right. COP26 is a load of countries with their hands out expecting to be paid to not cut down trees or not build coal fired plants. That's what it will be. Gen Z will have the £1.4 trillion debt of UK net zero to pay for, plus paying the rest of the world not to do things. This forum is very concerned about the plight of UK young people, and this is going to be an enormous burden for them.
  10. (1) I didn't know it had a name so thanks for that. Any forum members that think efficiency will solve all problems should look at this. ... improved efficiency increases real incomes and accelerates economic growth, further increasing the demand for resources. The Jevons paradox occurs when the effect from increased demand predominates, and improved efficiency increases the speed at which resources are used. https://en.wikipedia.org/wiki/Jevons_paradox (2) But that is precisely what the Jevon's Paradox is about ! In fact what is going currently is a very good example of this paradox. Many public sector workers have been working at home on full salary and they've saved their commuting costs and have had no restaurant meals or nights out. They have a lot of money burning a hole in their pockets and they are spending it on moving house, property renovations and the like. (3) It's a long time before the world population declines.
  11. The figures are probably good as far as they go. I'm not disputing the 20% of electricity figure and it's not a case of error bars. I am highlighting a common misconception, and that is all we have to do is decarbonise our current electricity generation. Whereas the fact is, we have to do far more than that, because electricity is only a small fraction of the energy we use. Depending on what source you read it is 11 or 15%. All those millions of buildings currently heating and cooking on gas, you have to heat with electricity. All those millions of petrol and diesel vehicles on the roads you have to run on electricity. As for air transport, let's not go there. (2) It depends if investors want a return on their money. Subsidies won't continue for ever. Solar produces most energy at times of low demand and that is an economic problem for it. People will plug their EVs in for charging when they get home from work, i.e the evening. (3) The big question though is what? What is the best way forward?
  12. It's a very old idea, that resources saved in one area means you will spend more money elsewhere, thereby using resources another area. Simply put, if your cost per mile goes down, people can and do drive further to compensate. If I save on groceries, I will likely fly further on holiday. Etc. In fact money probably is a measure of energy.
  13. Every speed bump, every 20mph speed limit, every cycle lane, every street closed to traffic, every new traffic light, has an increased carbon emission associated with it. Why don't we see these calculations?
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