06-19-18 Rob Lerner Water Woes - Pandemic - Amazing Microbes

Quinta Loreto Hotel, Cjon. de Loreto 15, Centro, Zona Centro, 37700 San Miguel de Allende, Gto.

From Cjon. de Loreto, enter the Mercado de Artisanias alley (East, going up-hill) about twenty yards and turn to your left into the Hotel Quinta Loreto compound.

The community center is on the Southeast side of the little central park. If you are coming by car, there is a parking lot within the compound.

(The community center is in the same location as the Philosophical get-together which is held on Fridays.)

A 50 pesos donation is suggested.

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Introductions/News

We introduce ourselves; A quick overview of weekly news in science, nature and technology.********SMA Science Book Club news

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Presentations

Dennis Taylor brings us this interesting link:

"Interesting article on sequestering CO2 in concrete"

Terra Mizwa will present some short SCIENCE articles.

Intro's | News | Rob Lerner: Recent science news and stories of interest,

including "Solutions for So Cal Water Woes"

"Are We Ready for the Next Pandemic"

"More Amazing Microbes"

Main topic: "Geoengineering: Moral Hazard or Salvation?"

Stephen Goodfellow: "The Coronal Heating Problem"

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Stephen Goodfellow's links from News last week:

Solar Update, Cosmic Rays Rising, Volcano Data

https://www.youtube.com/watch?list=PLHSoxioQtwZeQaRnO5_9AJB2RmevUpuPT&v=FUpwFmwK4sE

When we last discussed Cavity Phenomena

https://sites.google.com/site/scitecnature/2016-scitechnature/11-16-16---the-living-universe

Sonoluminescence; small cavity bubble subjected to specific sound frequencies produce temperatures hotter than the Sun:

https://www.youtube.com/watch?v=O9B3vzsZsr4

Underwater Explosions at 120,000fps - The Slow Mo Guys - YouTube

https://youtu.be/E5rGFZWQfzk?t=2m37s

Incredible Super Slow Motion Bullet Impact. Notice the contraction and re-expansion of the cavity:

https://youtu.be/fX4ODh1g4eM?t=12s

The Carina Nebula; cavity left by an exploding star. Note the bow shock, as the outward push of the explosion hits the interstellar matter:

https://apod.nasa.gov/apod/image/1412/CarinaExpanding_Hubble_750d.gif

Another example of an exploding nebula:

https://fsmedia.imgix.net/67/3c/a3/94/a6e9/470c/b3cb/6148949f26a3/fart-starjpg.jpeg?rect=0%2C262%2C1041%2C522&auto=format%2Ccompress&w=650

And another. Terra commented how the two cavities looked like mirrored jellyfish:

https://www.jpl.nasa.gov/spaceimages/images/largesize/PIA04216_hires.jpg

And yet another, this one in amazing detail:

https://www.telegraph.co.uk/content/dam/science/2017/12/19/384571main_ero_ngc6302_4x3_1600-1200-xlarge_trans_NvBQzQNjv4BqEDjTm7JpzhSGR1_8ApEWQA1vLvhkMtVb21dMmpQBfEs.jpg

In this beautifully detailed photo, one can observe the shock wave ripples inside the 'shell',

http://www.sciencemag.org/sites/default/files/images/cc_nebulae2_16x9.jpg

...so similar to those seen in the underwater gun discharge.

Cavitation! explained HD - YouTube

https://www.youtube.com/watch?v=ON_irzFAU9c

Earthly cavitation damage on man-made metal objects:

David McClintock's links from News last week:

https://www.youtube.com/watch?v=saCdvAp5cow

HOW A SINGLE SWEDISH SUBMARINE DEFEATED THE US NAVY

Despite the somewhat extreme title, it is true technology changes

and the latest non-nuclear powered modern submarines have

capabilities much to be respected and feared.

http://www.imf.org/external/pubs/ft/fandd/basics/trade.htm

INTERNATIONAL TRADE: COMMERCE AMONG NATIONS by the International Money Fund

Nations are almost always better off when they buy and sell from one another

I showed a short piece of this article to establish the basic principles of free trade.

The whole article is short and worth reading.

https://www.youtube.com/watch?v=DnW9ZQtI1_E

THE DECEPTIVE PROMISE OF FREE TRADE | DW DOCUMENTARY

Free Trade IS an important tpic and generally a Good Thing.

But there are daunting problems.

A bit of background:

Just after World War II, when the USA was nearly 90% of the world's economic output

when the USA was very self-confident and in a position to believe it should

establish a "new world order" then the US was remarkably altruistic and self-interested

at the same time. The great fear then was that a solitary giant economy would want to

sell its surplus abroad. The rest of the world, reeling from the dislocations of the war

were of a mind to protect their re-building economies.

So the US kindly pushed for free trade.

Free Trade (Brenton Woods, GATT, WTO, etc...) did bring about an increase in global prosperity.

But just like Hans Rosling's presentations that the world HAS made progress, the benefits are broadly spread whereas the disadvantages, the losers in those changes, are acutely felt.

How to balance the competing interests is a puzzle yet to be solved, likely by messy half-measures that try to help while other measures will assist the politically important at the expense of the commonweal.

Today, the economy of China is likely as large as that of the US.

Everything manufactured seems to be made well enough and much cheaper in China.

So the current president is pushing for higher tariffs and other restraints on trade.

It is unknown if those efforts will result in trade wars that could hurt more than they help.

TO AVOID "local" POLITICS, I BELIEVE IT IS HELPFUL TO SEEK AND FIND DOCUMENTARIES FROM ELSEWHERE (NOT THE US) THAT EXAMINE FREE TRADE LESS ARGUMENTATIVELY AND PERHAPS MORE CORRECTLY.

So, here we present this important topic from the point of view of Germany, a huge exporting economy.

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The other SMA Science Group

i³: Ideas that Inform and Inspire - Join mailing list ********

The SMA Rotary Club rests upon a foundation of compassion and science, so it too gets a heads up from SciTechNature.

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Link to John Wharton's Shelter Space; an excellent source of SciTechNature trace elements:sheltervg4.com

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