People don't realise that hydrogen is a greenhouse gas: It prevents atmospheric methane from degrading. Not only that, but about 10% of hydrogen inevitably leaks off during production and storage due to its remarkable ability to penetrate the most cleverly engineered seals.

My Android phone has no native SMS app. Google are moving to RCS, and Facebook (which I'm not madly keen on) was my previous option for not having separate messaging apps all over the place since the demise of Signal.

So what's left as an ordinary, boring, (and preferably Open) SMS app?

Methane is relatively easy, for a cryogenic, to keep cold and dense. Because it contains more energy per unit volume than, say, hydrogen, you don't have to pump it so fast into the combustion chamber. Your fuel tanks, pumps etc. are smaller and therefore lighter.

Because it contains much less carbon than kerosene, it does not decompose into a black mess inside the engine.

But it is cryogenic, and suffers density changes during pumping, compressing, etc. If this gets out of hand it behaves much like trapped air in a garden hose. This is hard on the engine innards...

Vik :v)

If something *almost* works, it's not there yet.

A big problem when travelling with an EV (ask me how I know) is when chargers are broken or otherwise unexpectedly inaccessible due to flooding, landslips etc. - particularly in rural areas. At that point, you are very glad of the "unnecessary" range.

Fortunately, there are a variety of vehicles available which people can pick required features from.

This is precisely the problem. We are looking at the material using our current knowledge of materials in our tech level, and it makes perfect sense to us in the same way that it made perfect sense to the Victorians that advanced computing devices would be made from fiendishly complex clockwork.

But advanced tech would be nanofabricated from lighter elements with high intrinsic bond strength, organised at the atomic scale. So in looking at exotic alloys we are barking entirely up the wrong tree.

A civilization with the technology to reach earth would have reached the point where they had control over molecular manufacturing. They wouldn't use metals. They would be using bulk nanocrystaline diamond or sapphire due to their greater strength/weight ratios and durability in the interstellar vacuum. So, no, I don't think he's found advanced alien tech.

So if a developer builds an application with the RHL files, and a client asks for the source, what does the developer do? Refuse to release the source files they got from Red Hat and breach the GPL, or release the full source and break their contract with Red Hat?

From here it looks like Red Hat have just worked themselves into a corner where using their Linux becomes a legal minefield.

Sounds about as safe as a carbon fibre submersible.

What the Chinese are discussing is slightly different to what the West wants to do. Western groups want to beam from geosynchronous orbit so that their patch gets all the power, and also to avoid shadow.

China wants to beam from low orbit, and swap power from site to site as the satellites progress in orbit. Presumably they'll beam between satellites to transfer power into shaded bits. Lossy, but then so is beaming 36,000km.

Cool thing though is beaming power to spacecraft or lunar colonies.

China did this in, I think, 2019. NZ's Emrod did 2kW a couple of years back. One of the purposes of China's Tiangong is to test it from orbit. So great technology, great idea, somewhat overstated in the cutting edge department.

It was to stop people realising that their cars are not adequately RF shielded. Their argument that nobody wants it was just a bucket of crap without the bucket.

Here in NZ our civil defence broadcasts are on AM. The range, coverage, and resilience are superior to FM, and in an emergency fewer services have to be maintained. In summary, ditching AM is a danger to civilians.

Many people say "but I don't have an AM radio these days" forgetting that there is one in their car. Given the issue is largely rural coverage, and most rural folks are going to have a vehicle of some sort, AM remains essential.

I have a small AM radio and it stays in my go bag in a ziploc bag with some spare batteries. Highly recommended.

I hope some of the traffic comes the way of Kdenlive. It has transformed from the shoddy bugfest of old into a very capable multi-track editor with GPU acceleration and excellent cross-platform support.

Yup, very American. Wait until they know it's unarmed, that it's leaving, and then shoot it in the back.

FWIW It's most likely a Chinese version of Google's "Project Loon" that got away, and is very similar to a device found floating over Japan a few years back.

JP Aerospace know a thing or to about the technology (and hold the airship altitude record) so well worth seeing what JP reckons https://www.youtube.com/watch?...

But why tell everyone otherwise? Politics I guess.