The three times in 200 years is for really large CMEs. Smaller ones hit the earth much more frequently.

There isn't much point in worrying about this. About the only people that would be spared on the side of the earth that was exposed would be people that were already underground/under water at the time. How far underground/under water would depend on the intensity of the gamma rays. Even if we detected a burst of neutrinos to alert us that something was coming, it wouldn't be enough warning for anyone to take shelter that wasn't already there. I guess if you really wanted to be safe you could live a few hundred feet down in an old mine, but that would rather suck.

If you were directly exposed to cobalt 60 (ex: holding a lump of it in your hand) you'd probably be in pretty rough shape, though that isn't used for nuclear power.

Crabs certainly did. The mudskippers could, given more time. I'm not sure what would convince you. You seem to have already made up your mind.

They never said that they made solar panels (though this purchase changes that). They are an installer and financier of solar panel installations. Part of the reason they are moving into solar cell and panel manufacturing is so that they can assure access to high efficiency panels at a reasonable price. They have stated that this is necessary for the business to be viable after solar incentive programs wind down. Regarding obsolete panels, I wouldn't be surprised if solar city has plans for upgrading existing clients and re-purposing old panels as technology improves. (We can now provide 75% or your electrical usage instead of the original capacity of 50%!). It would be a win-win, assuming that they have a use for the older panels.

Climate change is certainly a problem, but it's far from eliminating human life on planet Earth. I'd be more worried about an engineered pathogen.

We don't need fossil evidence. There are species of crabs that live on land. Mud-skippers live mainly in the water, but could easily evolve to land based animals.

We can't rule out a great number of things. That doesn't mean that they have any credence.

So what is to say that there wasn't a technical civilization on earth before the creation of the moon?

Sorry, that should have read:

No, the 3000km is assuming that you are using the lithium battery in addition to the normal lithium battery. The aluminum air battery is only to extend range by a total of 1600km. the other 1400 is from the lithium battery that you are charging each day.

It was the other way around. Theory first, then a working laser.

Also, we're not talking about 1000 to 0, there are parachutes to do most of the deceleration. The "regenerative" style braking would be for something like 200-0.

The "car" is traveling at high speed. It should be relatively simple to divert some of that fast moving air through the resistive coil to cool it. Probably a LOT easier than trying to dissipate the same amount of heat from the brake disks.

Or, you know, heat it up so much that it starts to melt. That's a real possibility for this application. A previous poster suggested rheostatic brakes (basically regenerative braking, where the electricity is dumped into a big resistor instead of being stored for later use). It would add weight and complexity, but if regular brake disks can't dissipate the energy fast enough, then something like that might be necessary.