Environmental News

i think our hummingbird has gone south

 

ApPrize, Agreed! which way do you think science is headed? At least the science most of us hear about.

Any hints in the paper from 67 about Global Warming? Who was even thinking about the connections emissions have on global atmospheric temps in the 60's?

 

I'm not aware of anybody thinking about that prior to 1896.

 

Keeling started measuring atmospheric CO2 in 1956, and was seeing various diurnal and seasonal patterns right away. That was reason enough to start continuous monitoring by 1958. The trend on his graph is already blatantly obvious by 1960.

According to this article, Keeling's initial measurements were started because various scientists in the 1950s were observing the increasing use of fossil fuels and wondering whether carbon dioxide in the air was rising, but nobody had been able to take accurate measurements of it.

His mentor, Revelle, moved to Harvard and started teaching about these rising numbers and global warming in the 1960s. One of his new students was Albert Gore Jr.

Keeling's initial measurements appear linked to the International Geophysical Year, July 1957-December 1958. Revelle was instrumental in creating that international effort.

 

i was reading this earlier, then reading the new study showing pfizer covid vaccine still 90% effective at preventing hospitalizations after 6 months, but dropping to 47% at preventing infections.

i thought it was an interesting comparison

 

I guess we still haven't resolved the meaning of "infection" in a way that's clear all around.

I think we mostly can agree on what it means for the vaccine to reduce incidence of symptomatic illness, hospitalization, and death.

And I think we sort of also agree that if you walk through a cloud of some given density of virus particles, the vaccine isn't making any difference to how many of those make landfall in your schnoz.

And yet, somewhere in between those two extremes, I keep hearing or reading about researchers reporting a reduction of "infection". I've heard or seen it often enough to think the folks must mean something specific by it, and it might involve some way of defining 'infection' that's more than just having virus land in your schnoz, but less than something else. But I haven't seen it spelled out.

 

me either. in my mind, if you were to test positive,then you would be infected, whether you had symptoms or not.
of course, the tests aren't 100%, so that's another curveball. and i don't even know what they are testing. antibodies? all or none? some?
and yet, they must have parameters in the studies to come up with infection rates.

 

sorry, there's only one mod, and he's a good guy with a lot on his plate. i will try to refrain.

 

My fault, sorry.

Bob Wilson

 

description got my mind wandering "space station insomnia? pillows in space?"
Than I was the url.

 

Trying to understand why pillow/linens not set ablaze, at least scorched. Don’t these things come in very hot?

 

When blazing supersonic at 50+ miles high, the skins get very hot. But that is so brief that the cores can remain icy. And they often fragment from mechanical or thermal stress (another piece was found a mile away, most pieces are never found), and we don't yet know whether or nor this piece was on that burnt pre-breakup exterior surface.

As they fall through the lower atmosphere, all but the largest ones slow to subsonic speeds, little ones to even rather slow terminal speeds, so can have plenty of time for wind-chill cooling of a hot skin.

With so many sizes and other variables, fresh fallen meteorites can be hot, or about ambient temperature, or even turn icy as the cold from unburnt cores seeps out.