Is that new? When I attended college in the 90s, engineering school tuition was more expensive than the college of arts and sciences.

I've always found the 7+ hours of LSD to be a bit exhausting. Also, it usually took me a good week or two to feel normal again. Usually with psilocybin I wake up feeling fine the next day.

Your game boy batteries were probably nickel cadmium. That technology took a long time to charge, had a low energy density, and relied on toxic cadmium. The technology has improved quite a bit since then.

Combusting hydrogen that starts in the liquid state is tricky. At 1 atmosphere, hydrogen evaporates into a gas at 33K, but oxygen freezes at 54K. On top of that, combustion occurs at much higher pressures in a jet engine. So, while it's definitely possible to make it work, you need an engine design that significantly pre-heats the incoming fuel. The space shuttle main engines do this by scavenging heat from the exhaust and are a marvel of engineering.

>Problem was they couldn't figure out how to store enough cryogenic hydrogen and keep it cryogenic to make it work.

That's still an unsolved problem. Liquid hydrogen only has 1/4 the energy density of gasoline, although it is significantly lighter per joule of energy. Some more research is also needed to figure out a way to efficiently split water, IIRC current methods lose a significant amount of energy to heat. Long term, I think battery technology will be the best bet for cars and airplanes and we might see hydrogen in use for grid balancing.

If I had to guess, I'd think the majority of hydrogen research funding comes from fossil fuel companies as they'll be entirely obsolete if the planet shifts away from liquid fuel.

Not raw honey is heated above 72C and filtered.

Yup. They'll be afraid of the 6g towers and claim 5g is safe.