The underground chemical stew beneath the Salton Sea is believed to hold enough lithium to power millions of cars and homes with green energy. But only if — a big if — enough of that scalding “geothermal brine” can be brought to the surface and the lithium sifted out.

That’s an incredibly complex process. And it’s just about as hard for those who live around the sea to separate reality from dreams when it comes to the impact of all that lithium.

In the best case, we’ve heard over the years, a lithium boom could generate billions of dollars; bring thousands of badly needed jobs for those living near the sea; spur an environmental revival; and give clean energy to a region, the state and beyond.