[Lex Computer & Tech Group/LCTG] new scientific insight

Wed Feb 5 15:29:10 PST 2020

“... their factories are self-contained, far more efficient than the clunky ones humans build, and pollute far less.”   I agree with this statement, with the proviso that it embeds value judgments about what we humans think is “good” for “the environment”.  An almost trivial example: do the vapors of skunk cabbage “pollute”?
     – Mike Alexander

On Wednesday, February 5, 2020, 4:36 PM, Dick and Jill Miller <themillers at millermicro.com> wrote:

 Steve: Not here - or Jill and I would be non-invasive Native Americans.

 George: My resident botanist has taught me that all plants ARE factories. What's more, their factories are self-contained, far more efficient than the clunky ones humans build, and pollute far less.

 Granted, I like my new computer as a nice add-on to the one I built internally...

 P.S.- More on the new computer at tomorrow's FOSS meeting.

 Cheers from
 --Dick Miller, Partner, MMS <TheMillers at millermicro.com>

|    |  Co-Leader, FOSS User Group at Natick Community-Senior Center |

 Sent from an awesome, inexpensive, non-proprietary, no-lock-in, no-bloatware, virus-resistant, free open-source software, Linux PC - with Ubuntu 19.10/Unity and draft Fotoxx 21.

 On 2/4/20 11:06 PM, Steve Isenberg wrote:

 I wonder if the types of plants a person has at home (not the factory type) gives some clues as to their personality type. 

  On Tue, Feb 4, 2020 at 3:30 PM George Gamota <ggamota at stma-llc.com> wrote:

All factories can be called plants BUT not all plants can be called factories!

From: LCTG <lctg-bounces+ggamota=stma-llc.com at lists.toku.us> On Behalf Of jjrudy1 at comcast.net
 Sent: Tuesday, February 4, 2020 2:21 PM
 To: 'Robert Primak' <bobprimak at yahoo.com>; 'Lex Computer Group' <lctg at lists.toku.us>
 Subject: Re: [Lex Computer & Tech Group/LCTG] new scientific insight

If plants are not good for you, that explains why a factory is frequently called a plant

John Rudy

781-861-0402

781-718-8334 (cell)

20 Heritage Drive

Lexington, MA  02420

From: Robert Primak <bobprimak at yahoo.com> 
 Sent: Tuesday, February 4, 2020 1:31 PM
 To: Lex Computer Group <lctg at lists.toku.us>; jjrudy1 at comcast.net
 Subject: Re: [Lex Computer & Tech Group/LCTG] new scientific insight

Garden Myths - Learn the truth about gardening

Do Houseplants Increase Oxygen Levels?

https://www.gardenmyths.com/houseplants-increase-oxygen-levels/

"In most homes the plants cannot produce oxygen at anywhere near the amounts we consume."

(Calculations are included in the article. It would take a LOT of plants to grow enough to offset the oxygen consumption of even a single person in a closed room with no outside air circulating.) 

"The main factor contributing to good oxygen levels is the ventilation rate – the exchange of air with the outdoors."

(The article also includes links to supporting references.) 

(Biography of author:

Bio for Robert Pavlis

https://www.gardenmyths.com/media-kit/#bio )

This author is a chemist/biochemist, and a Master Gardener, and he does seem to have his references in order. 

(My conclusions from what I've read about this:) Except for the fragrance of some plants, it would seem reasonable to conclude that houseplants have mainly a psychological effect, not a biologically significant effect. Also, an indoor environment in which plants thrive (well-regulated humidity, clean, free-flowing air, outside air exchange, etc.) is also an indoor environment in which people do better, and things like black mold and excessive airborne dust will not be thriving. We also like bright daylight (or the best indoor simulation of it we can put together), as do most plants. So thriving houseplants may be more of an indicator of good indoor air quality (and an attentive indoor gardener) than a cause of good air quality. 

-- Bob Primak

On Tuesday, February 4, 2020, 09:16:02 AM EST, jjrudy1 at comcast.net <jjrudy1 at comcast.net> wrote: 

I used to spend a lot of money on house plants which my black thumb quickly killed.  Even cacti and other stuff which is supposed to last. (I don’t think I kill rocks).

https://bigthink.com/surprising-science/house-plants-purifying

Now my question is whether they make a measurable difference in oxygen and CO2

John Rudy

781-861-0402

781-718-8334 (cell)

20 Heritage Drive

Lexington, MA  02420

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