I was wondering whether there UV flash also exist for DC transmission lines. Is there any expert around who knows that?

This is of interest as it is very difficult to build new power lines all over Europe, usually resulting in around 20 years of legal battle for a mere 30 km of power lines far away from any densely populated area. This is just slightly reduced for buried transmission lines with all their disadvantages. Thus a current idea/discussion is to hang DC power lines on existing poles for long distance transmission.

Oh no.... they' re DOOMed!

Well, you misunderstood. They produced 5TWh of energy in July, the month of July has 744 hours, so the average power from photovoltaics was 6.72GW. This is comparable to about 15 nuclear reactors. When you look at presentation linked in the article, you see that this drops 0.35TWh in January, i.e., an average power of 0.47GW. In Germany the price for electricity is about 3 times that of the U.S., at least partially due to the subsidies of renewables.

A major mistake in my eyes is that they only ensure that these people were in a moving vehicle, not that they were actually driving it. Think about busses or your kids talking on the phone while you're driving. Considering this and that only few people make calls while driving, it is very likely that only a small percentage of the measured data were actually people driving a car.

You cannot buy one, the only way to get such a phone is to take part in the crowd funding. Or get one later, when someone sells his on eBay.

Solution: Issue H1-B visas only if there is a contract with a wage of at least 80kUSD/a. (the value of this limit is just politics...)

I honestly believe them. However, what they investigated is not relevant. All they claim is that it is not the stuff they pump in that comes back out and contaminates the water. The study does NOT claim that the pollution is not an effect of the whole process, which it very possibly is.