*THIS POST IS FALSE the silica hydrogen compound is a room temperature metal and a superconductor but not both at the same time*
I have talked about the possibility of of a hydrogen based room temperature superconductor here. As described in that article I believed a metallic hydrogen could produce a superconductor that would be such an advance as to be reasonably called a paradigm shift.
It turns out someone has made a room temperature superconductor using hydrogen. The pressure required for the compound is not practical. Now that hydrogen has been shown to have these properties more research into practical compounds will be encouraged. The area has recently seen another practical improvement. The first ambient at normal temperature superconductor has been reported in the last few days also.
So what does a room temperature superconductor mean? I have no idea, but it is probably the biggest innovation in electricity since *Nicolas* Tesla. It is something so odd that you are much better spending your time figuring out what do do with it then trying to think what other people are going to do with it. But to give one of a hundred possible examples, with a superconducting power cable you can produce electricity anywhere and transport it without loss. This would increase energy efficiency by over 30%*.
So my bet on what the maximum temperature superconductor by the end of the year is out by at least 110K. If you want to make a bet you can do it here.
*edit. You lose about 10% of electricity to power line loses and about 20% to disparities in usage between different times. You can smooth out these disparities by transporting the electricity during your night to someone elses peak demand time of day.