

Batteries are not cheap, especially on industrial scale. And most batteries are not ecologically friendly. It makes far more sense to put all the power solar panels produce during the day to immediate use for maximum efficiency, there is no form of battery that exists that doesn’t have some kind of efficiency loss.z
Putting a battery on this is like building a water tower in your front lawn that only feeds your sprinkler, and you’re only filling it from a hose. You don’t really get any benefit out of it and it’s just easier to run the hose right to the sprinkler anyways.
We aren’t totally sure. Rainforest isn’t the correct term but it was probably lush and green. The evidence we had is vegetation on Antarctica approx 90 million years ago. That also has the caveat that 90 million years ago, Antarctica was further north and didn’t intersect the south pole. North Pole today is an ice sheet, so probably was a thinner ice sheet back then too.