JLK_121416

Seawater has a higher density, about 2,5% according to Wikipedia. So 40m of water column fresh water vs seawater would be equal to 1m water column fresh water. 400m would result in a 1 bar pressure difference.

It's probably a Belgian television news item that initiated this, was all over the news today. +1000 clips were leaked to the reporter, who found some addresses in the clips, and went to these locations to confront the people living there. They also had some Google employees anonymously speaking about the things they hear: identifiable information, private conversations or actvities... Nothing shocking really, if you are a bit into IT stuff, but apparently most people aren't.

https://www.vrt.be/vrtnws/nl/2019/07/10/google-luistert-mee/

Plus: the value of the power (energy) is variable throughout time: solar produces energy synchronously and tends to drive power prices down due to a very low marginal cost (hence negative power prices when there's a lot of wind and solar in Germany e.g.). When there's no wind and no solar, combined with a high demand (e.g. low temperatures in Europe), prices will be much much higher. So the remaining 70% of your capacity factor is worth more than the first 20%.

This was a topic in the Belgian news a couple of days ago. The issue is not as much whether the isopropanol will be used for chemical warfare, nor if it should be regarded dangerous or if it is on a list with restricted substances, but more that these companies would/should have known that exporting it to Syria is a big risk given the current context. It was more of a moral question rather than a 'scientific' one.

Tons of isopropanol were destroyed in Syria by UN workers when trying to destroy all chemical weapons and precursors.*

*https://www.armscontrol.org/files/Panel2.1_Anelli_TuckerConf...

That doesn't necessarily mean that the element is poisonous per se. Many good/healthy substances are poisonous at high levels,e.g.: Vitamin A poisoning [0] Water poisoning [1]

[0] https://en.m.wikipedia.org/wiki/Hypervitaminosis_A [1] https://en.m.wikipedia.org/wiki/Water_intoxication

Yes, Betz's law [0]:

"Consider that if all of the energy coming from wind movement through a turbine was extracted as useful energy the wind speed afterwards would drop to zero. If the wind stopped moving at the exit of the turbine, then no more fresh wind could get in - it would be blocked."

[0] https://en.m.wikipedia.org/wiki/Betz's_law

One could - from a narrow perspective[1] - argue that diesel engines on plant oil would be carbon-neutral but not that they are emission free. In fact: (older) diesel engines are being banned from cities (e.g. Antwerp, Belgium) not because of CO2-emissions but due to emissions of particulates (and NOx). CO2 is a global problem, but particulates and NOx are local problems (and hence more likely to trigger local political action).

[1] it is often argued that biomass/biofuel is not entirely carbon-neutral due to several reasons: the inherent lifecycle means some CO2 is in the atmosphere at any point; production is often based on CO2-emitting processes ... Secondly some other issues pop up as well: (indirect) land use change, competition with food ...

Same for me in chrome on android 6

Ok, but if the homeless guy gets $1.000.000, inflation will be much higher than 10-fold...

Actually, I guess, the real losers would be middle class...

If bread becomes 10x as expensive, who will be hurt more?