Paul, heard an interesting item on BBC radio the other day on the
subject of shortage of respirators.
An international group of 3D printer users, individuals, companies etc
have a 3D design and they are producing them for free and giving them
to hospitals in the countries where they are domiciled. It appears that
they are operating on a large scale as a group.

Bazz,

At least the UK has manufacturers left who will be producing ventilators - Rolls Royce, Dyson etc - along with their core manufacturing. We don't have this, thanks to the de-industrialisation of the country in favour of Chinese, who have given us the virus.

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SR,

The last time I looked at the data, the reticulation system to the power generators and battery backup was not included in the cost and CO2 output. Given the variability of wind, the sizing of the reticulation to the wind generators needs to be sized for its full capacity or 3.5 times its average output whereas for nuclear it is closer to 1.3 times. If this is taken into account, with battery backup then Nuclear power has the lowest carbon footprint by a country mile.

Solar also has a major problem. Maximum output is only available at midday.
Unless you use tracking, but not suitable for rooftops.
It doesn't get out of bed until about 9am this time of year, provided
that it is not overcast as it is today.
Then it takes it easy for afternoon tea about 3pm. 2pm in winter.
It starts feeling very tied by 4pm and is fast asleep by 5pm except
when it is fooled by daylight saving time till 6pm.

Some say a jolt from a battery will help. Well true but then you need
more solar to charge the battery.