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What are the environmental and health effects of seeding material?
Minimal. The most common seeding material, silver iodide, is used in very minute amounts. The typical concentration of silver in rainwater or snow from a seeded cloud is less than 0.1 microgram per liter (one part in 10,000,000,000). This is well below the acceptable concentration of 50 micrograms per liter, set by the U. S. Public Health Service. Many regions have much higher concentrations of silver in the soil than are found in precipitation from seeded clouds. The concentration of iodine in iodized salt used on food is far above the concentration found in precipitation from a seeded storm. National Environmental Policy Act compliance for all cloud seeding environmental impacts has been demonstrated by past studies. The U.S. Bureau of Reclamation (USBR) extensively studied environmental and health impacts4;5;6. The toxicity of silver and silver compounds (from silver iodide) was shown to be of low order. According to the USBR, the tiny amounts of silver used in cloud seeding are 100 times less than industry emissions into the atmosphere in many parts of the country, or individual exposure from tooth fillings. Accumulations in the soil, vegetation, and surface runoff have not been large enough to measure above natural background7. A 1995 environmental assessment in the Sierra Nevada of California8 and a 2004 study in Australia confirmed these earlier findings.
What about interference with nature?
These questions often ignore the fact that human activities have caused inadvertent weather modification for many centuries. A recent National Research Council report20 states that “there is ample evidence that inadvertent weather and global climate modification (e.g., greenhouse gases affecting global temperatures and anthropogenic aerosols affecting cloud properties) is a reality.” Even the simple act of cultivating a farm field alters local climate. Intentional weather modification, particularly of the form practiced in winter seeding, alters the environment far less than the accumulated effects of inadvertent weather modification. Indeed, cloud seeding in California may have been partially compensating for precipitation losses from the inadvertent weather modification brought on by air pollution21.
Originally posted by kdog1982
Whoa!
That is to weird.I just watch a show on if the earth stopped spinning today.
It's was scary.
I will try to find it and a link for you all.
It was Aftermath: When the Earth Stops Spinning on National Geographic Channel
channel.nationalgeographic.com...
The Earth revolves at 1,000 miles an hour. But what if it significantly slowed and eventually stopped? Sea levels at the equator drop and locations surrounded by water would dry out. With a loss of atmosphere, the Earth could no longer support human life. And each side of the Earth will be stuck in day or night for six months at a time. The dark side is lethally cold and the light side is bathed in deadly solar radiation. See how humans and creatures might cope in this changing world. Read more: channel.nationalgeographic.com...
edit on 15-5-2011 by kdog1982 because: (no reason given)
Originally posted by Kharron
reply to post by speaknoevil07
Hah that's funny, I was just talking to my wife about it being opposite!
We used to live up in Washington State and it would stay light much later, but now that we've moved to Cali a few years ago the sun sets MUCH earlier! In fact, it will be dark here when I call my family up north and they are still hanging out outside in full daylight.
Interesting how we all perceive things differently, I definitely see it as as less light and not more.
Khar
Originally posted by violet
Originally posted by Kharron
reply to post by speaknoevil07
Hah that's funny, I was just talking to my wife about it being opposite!
We used to live up in Washington State and it would stay light much later, but now that we've moved to Cali a few years ago the sun sets MUCH earlier! In fact, it will be dark here when I call my family up north and they are still hanging out outside in full daylight.
Interesting how we all perceive things differently, I definitely see it as as less light and not more.
Khar
In Cali you are closer to the equator.
Welcome to the dark side. EVERYTHING is out of synch. The Sun. The Moon. The weather. The birds and the bees........the list is endless. Very few are noticing and when they do there is an immediate deluge of disinformation coming their way. You have two options now, follow your gut and hold on tight or let go and sink into the abyss with the rest of the sheep.
Originally posted by Dinoman
Absolutely Bang On...
My Misses and me keep saying our body clocks are messed up by a big margin, Its still light here in London, England gone 9pm. And I have just used the calculater on this thread an it says sunset 7.47pm. We have been noticing it for ages. Also it can be freezing cold outside but when the sun is directly on you its very hot. We have had quite a few days in the 70s lately and I know so many people who have been totally burnt by this 70 degree heat. My Misses and myself included. Im half Spanish, have Olive skin and never burn. Im a scaffolder and can normally work all day in 90 degree heat with my shirt off without burning normally. I had my shirt off the other day for two hours when it was 70 degrees and burnt. When its quite cold outside on days, I also notice when I get in my car its red Hot.
And to top it off the moons line of shadow rotates to the right all through the night, and has done since November 2010. I have wrote a couple of threads about this.
Originally posted by Dinoman
Absolutely Bang On...
My Misses and me keep saying our body clocks are messed up by a big margin, Its still light here in London, England gone 9pm. And I have just used the calculater on this thread an it says sunset 7.47pm.