VilleOr

> Rosin-based solder flux fume is now regarded as one of the most significant causes of occupational asthma in Britain.

Source: https://www.hse.gov.uk/lung-disease/electronics-soldering.ht...

Children are up to five times more likely to get lead in their bodies, so under no circumstances should children get leaded tin in their hands.

It is possible to get lead poisoning through the skin even as an adult if lead is handled daily. Fortunately, nowadays lead-free tin is used, but I know that some hobbyists still have a lot of lead in their stores.

If I see correctly, the base of the screen is screwed to the hull? At least there is now less than the advertised 12.7 cm of carbon fibre composite at that point.

Average US flight trip is about 800 km (~500 miles). If even half of all flights were powered by electricity, the impact on emissions would be huge.

You need a big centrifuge where you can live or at least sleep and do physical exercises. It should eliminate the health problems caused by low gravity.

Majority of geothermal enery comes from the decay of radioactive isotopes. It's not renewable, but there will be enough heat for millions of years.