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Does anyonr know how many tonnes of CO2 are produced during the manufacture of a double decker bus battery?
The only two I know about are 35 tonnes for a Range Rover and 2700 tonnes for a B747 equivalent.
These point the way to hydrogen fuel cell power for larger vehicles.

'Also I've just finished watching Making a Murderer so don't have a great deal of confidence in US court system'
I don't have, and never have, had a great deal of confidence in the US, period.

A battery to give the performance of a B747 would weigh 2700 tonnes. How long to charge that up completely?
And what would be the amount of CO2 emitted during the B747's battery's manufacture, if a Range Rover battery which weighs 0.5 tonnes produces 35 tonnes of CO2 during its manufacture?

Seance, there's a lot more mileage in this than 20 bob.
Think first, act later, much later.

This petitioon is not getting enough publicity

'no one mentioned the Hindenburg'
The hydrogen in the Hindenburg didn't explode, it combusted, or burnt rapidly, more rapidly than petrol, diesel or gas (methane based) fuels. the initial flame was caused by a lightening strike or by distortion and failure of the structure within the envelope as the balloon turned sharply, causing a spark and fire in the doped outer fabric. The dope constituents were the same as those used in the German rocket fuel of the time, but in different proportions.
If you observe the film of the accident the flame spreads along the balloon, burning the dope and the hydrogen as it progresses, it does not explode. In the latter moment, as the front part burns and reaches the ground this is all very clear.
People are seen running very close underneath showing that the heat radiated is low although the flame front is extremely rapid.
A BBC TV reoprter the other day stated that the fuels in internal combustion engines 'EXLODED', negating in one simple sentence the fact that many, many years and billions of money have been spent worldwide on research and development in internal combustion engine combustion chambers. By controlling the combustion you control and maximise the thermal efficiency and avoid damage to the engine.
TV and radio reporters can become sudden technical experts in the subject they have been asked to report on until they open their mouths and rabbit on about something they had never heard about half an hour earlier.
The media are basically arts based. Any move to technical subjrcts and they immediately get their nickers in a twist.

'Best to set up a limited company and draw your personal allowance via that in the way of PAYE.'
Your accountant could charge you £3/4000 (maybe more) to audit your company accounts each year. Best check that out first.

Yes, I worked for Ricardo for many years until retirement and can confirm their knowledge on energy ,combustion, all related items and applying the knowledge, research and developmentin theoretical and practical applications is second to none throughout the world

Who was Donald Trump?

'no, it was down because the website is poor most of the time. and it was down for lots of boards.'
Can you keep repeating that time and time again please, but stronger.
Such as-
This website is going from poor to bad and worse and worserer and worsererer and less coverage on all aspects it covers.
Is it the computer, the operators, the company policies or all three?

As is usual government is always too slow off the mark when new ideas and technology are worthy of being developed, well, everything actually. it mentioned here in government despite organisations having been set up. Private companies seem to get everything going much more quickly but don't have the umph before someone buys them out.
The BBC doesn't help either being engrossed in pulling down everything the government touches. There was a programme called Tomorrows World which did try to publicise some of the technologies, now we're saddled with kids programmes like Top Gear.

Only gone up 15% inside 4 months!

I gave up on the Fool a long time ago. Not trustworthy, a very important requirement, and irresponsible. Their articles always seem to lead on to buying another of their dubious surveys.
Just another of the many money making machines with self interest at the centre of their operations.

I believe there was a wind blade manufacturer here in the UK but they moved it abroad due to lack of interest and foresight here. And Boris must surely know about that
Hoisted on your own petard seems to come to mind.

'When Boris etc finally wake up to the fact that we don't have enough electric or the infrastructure to have lecky cars and heavy haulage.. Then hydrogen will go to the moon'
It will only go to the moon when we have all the infrastructure to supply the electricity to generate the hydrogen

The wheels are slowly coming off the Govts wagons slowly and the circle is getting tighter. One wheel came off when the lockdown was shown to have holes in it. Another came off when Cummins went AWOL. Another is falling of now the students have gone back to university and ignoring lockdown rules. It's going to get worse at first then will evntually get better as people realise they really could suffer. One wheel to go.
Thank God we have companies like AVCT, we need to fully support it, they're more important than the MMs, TW,, shorter and trader antics knocking this about.

By my approximation of the savings to Intergroup by introducing 75kW of solar power instead of diesel oil, if only 30% of that capability is used, it saves them A$200/day or A$13M/year. ON ONE EXPLORATORY SITE! And they have many production sites!
I'm not reducing my holdings in this company, exactly the opposite
Talk TWaddle all you want and TWiddle the numbers to suit your agenda, it makes me TWitch when I think how TWats influence investors to sell. Stock markets are business, personal agendas have no place in business.
Unfortunately the current trend is to trash everything. Happily share prices in this company are becoming like christmas presents, I love them.

'Proof of how corrupt the BBC is, why did they avoid explaining that this test only shows you have been infectious in the past. They showed clips of people queuing at test centres, where this test would be useless'
Could it be they are technically incompetent. Reporting on anything scientific or in engineering or manufacturing they get it wrong. Often after a government or company statement they precis it and change the real text and meaning. Being an engineer I've often groaned when I see perfectly serious projects dismissed with a few simple words (the general public aren't that simple).
Going around a factory or a machine they often get a presenter to scream their head off, yelling 'Look at this, wow, fantastic, GREAT, how wonderful, must see that again, can I have a go, OOPs, Sorry, I got that wrong.'
Well, if you get an arts type to report on science, what can you expect.
Treat BBC reports with some suspicion.

Fully agree. Hydrogen will become a large component of our energy conversion across the board. Stop talking about cars all the time and concentrate on large vehicles and industrial uses. Once we have the industry built up further then the government should ban our companies being bought up by bigger corporate entities. more important for inovative smaller companies which are more entrepeneurial to be given a free hand and quickly develop the best products and fully supported by an enlightened government which at the moment are moreengrossed in pointless political manoeverings

'I have carried out research that takes a look at the evidence to support my theory that Primerdesign have an OEM agreement in place with Thermo Fisher for their COVID-19 test.'
Is this why our 'extinguished' friend Trumpy is trumpeting that the USA have an american designed covid test?
He'll grab any opportunity that pushes him to the front.