I saw that. My initial thoughts were based on pumping the air. It then clicked that they are pumping the water. So, yeh, my bad. Pumping an incompressible liquid is a vastly more favorable problem than the air.
It still falls short of the efficiencies that can be had with mechanical coupling to a modern generator though. And as I've mentioned elsewhere, I think they have more underwater complexity because the pump units / turbines have to be at the same depth as the spheres in their case. I'd envision pulleys at depth and cables mechanically transmitting energy back to motor / generators at the surface.
Unless Amazon is really believing they will increase sales by 50% and that it will all be new sales instead of sales taken from other stores, this is just moving jobs from other companies, like UPS, and putting them at Amazon.
This looks like a likely net job loss for the country due to increased efficiency of shipping and even more pressure on small businesses due to reducing the value of the immediacy of shopping down the street.
If not for walmart, It could also be seen as leveraging their monopoly and unhealthy due to adding to their vertical depth. Is a "duopoly" bad when it damages or destroys thousands of small businesses that spread wealth more effectively?
Companies have never stopped building in America. In the past few years, they've had to build and modernize a lot of facilities to get the production back to its current record levels without rehiring the workers lost in the 2009 time frame. Yet the net increase in factory jobs has been negligible. Here's a great chart showing what has happened.
That will continue. Actually, it would be surprising if we don't start seeing the jobs go lower while output goes up.
The difference is that now, all of those projects will be highly publicized and touted as due to Trump so that Trump can reward them with tax breaks they weren't getting before for the same thing.
Im not sure 'thesun.co.uk' is the best source for science news!
At least it's not Slashdot!
You will have many recoverable tape errors.