In Japan 5yo kids take the subway alone...

I took the city bus to kindergarten, alone, in the U.S. Things have changed here since, and we have given a name to this specific issue: "Stranger Danger". Neighbors discuss vans cruising town, looking to abduct their children. I've not seen any actual arrests and trials, though.

This would up the game for wind energy. Less land footprint per KW, better capacity factor.

Would airborne wind be cheaper than photovoltaics?

It probably depends on geography (latitude and weather patterns)

This idea has been tried for decades with little to no success. I'd be shocked if this turned out differently.

There is an element I haven't seen in this conversation: as the number of combustion engine cars goes down the number of gas stations also goes down. At some point, combustion engine drivers will start feeling range anxiety. So when you get rid of your fossil-fuel-burner vehicle, you are pushing others to do so.

The full calculus of CO2 emissions reduction should also include the reduction induced in others.

That process has likely already started, with the long term trend towards consolidation having accelerated over the past five years.

In the UK, for example, the number of petrol stations has fallen by around 75% in the past 50 years and drivers now have to travel twice as far on average to fill up.

I'd expect the remaining sites in city centres to have entirely vanished by 2035. Out of town, they'll last a little longer but the distribution component of petrol prices will rise as the fixed costs are born by dwindling numbers of ICE drivers.

By the mid 2040s, there'll only be a tiny market driven largely by enthusiasts who don't care much about price. Perhaps we'll see delivery services springing up, similar to those for home heating oil, but the traditional large petrol station will be all but dead.

Depends on country maybe? In Germany they make more by being small supermarkets, selling snacks, energy drinks, tobacco/vapes, alcohol, at insane prices, 24/7. In the USA similar, with even wider range of stuff, except alcohol, though that may depend on the state, or even county also.

Google had a paper last year explaining that: https://blog.google/innovation-and-ai/technology/research/us...

We do not have any useful algorithm to run on a quantum computer.

The problem is not that we do not have yet quantum computers powerful enough, but that even if we had such computers we would not have anything useful to run on them.

The only two I know are https://en.wikipedia.org/wiki/Shor%27s_algorithm that uses https://en.wikipedia.org/wiki/Quantum_Fourier_transform

so it sounds like a douglasadams-ism, we dont know the question to the answer.

that seems to reduce to, a solution in search of a problem.

You could use this audio at 300 baud by recording it on a standard audio cassette. Then play the audio back as input to the modem to retrieve the data

Minimodem does this.

Actually in 1982 I was able to store my programs on standard audio cassettes. Hardware needed: a modem and a cheap tape recorder. My apple II modem would chirp the ascii binary like Starwars' R2D2, I'd record that and when needed I'd play it back to the modem.

You really used a modem instead of the tape out jack?

The tape jack is a modem.

«Here, we reported graphene (Gra)/HfOx/tungsten (W) memristors that operated reliably up to 700 °C»

I agree, this report from astronaut Camarda should really alarm NASA.

Not really - read the Berger article for more details above -Camarda is older, in his 70s and his attitude overall (based on the reports) reads more like an ego bruise than serious reflection on the engineering problem

Obviously concerns should be vetted by the engineering teams involved but it appears they have been addressed to meet the needs of the mission

This report from astronaut Camarda is indeed a bomb. Scaring.

The famous ghoti as an alternate spelling for fish. Gh like in enough O like in women Ti like in nation

See:

https://en.wikipedia.org/wiki/Ghoti_Hook