A new heat engine with no moving parts is as efficient as a steam turbine | MIT News | Massachusetts Institute of Technology
That's pretty interesting. This particular one is at 40% efficiency. I'd imagine that if/ once the efficiency can get quite a bit higher that this could gain quite a bit of traction.
Let us hope. At least there are folks still trying. I would also like to welcome you back after being missing for a few weeks. Good to have you with us again.