Joined: Sun Oct 17, 2004 7:19 pm Posts: 39068 Location: Chapel Hill, NC, USA Gender: Male
April 24, 2005
900,000-year-old ice!
But would science make a difference (has it ever)? Guardian:
An Italian expedition to the Antarctic has taken a sample of ice which is more than 900,000 years old and could give scientists evidence of past climate changes which would discredit global warming doubters.
The ice core, which is double the age of previous samples, will show how much carbon dioxide there was in the atmosphere during previous warm and cold phases in the climate and whether the current concentrations caused by burning fossil fuels are likely the lead to catastrophic global warming later this century.
The new core could be enough to discredit the fast diminishing band of climate sceptics, who have the ear of the Bush administration and who say that the climate has always fluctuated and man's destruction of forests and use of oil has nothing to do with the current rising temperatures and increased storminess across the world.
_________________ "Though some may think there should be a separation between art/music and politics, it should be reinforced that art can be a form of nonviolent protest." - e.v.
Earth's 'oldest thing ever' gets viewing Zircon crystal sample believed to date back 4.4 billion years Sunday, April 10, 2005 Posted: 1159 GMT (1959 HKT)
MADISON, Wisconsin (AP) -- Call it much ado about almost nothing.
To create buzz about an otherwise arcane subject, the University of Wisconsin-Madison showed off a tiny speck of zircon crystal believed to be the oldest known piece of Earth at about 4.4 billion years old.
Saturday's daylong celebration was capped with "The Rock Concert" by jazz musicians who composed music to try to answer the question: What does 4.4 billion years old sound like?
"This is it -- the oldest thing ever. One day only," said Joe Skulan, scientist with the UW-Madison Geology Museum, where the object was displayed under police guard. "The idea of having a big celebration of something that's so tiny -- we're playing with the obvious absurdity of it."
Jazz Passengers, a six-piece group from New York, was hired to compose music for the event. Composer Roy Nathanson said he mixed humor, jazz music, computer-generated beats and the occasional rocks being banged together to "follow the geological history of how this zircon came about."
"It's an amazing story. The whole thing is something that captures your imagination," said Nathanson, 53, a saxophonist who spent a year composing the performance.
Though scientists acknowledged there wasn't much to see, spectators used a microscope to check out the tiny grain, which measures less than two human hairs in diameter.
Analysis of the object in 2001 by John Valley, a UW-Madison professor of geology and geophysics, startled researchers around the world by concluding that the early Earth, instead of being a roiling ocean of magma, was cool enough to have oceans and continents -- key conditions for life.
"It's not very much to look at because it's so very small. But to me, the miraculous thing about the crystal is that we've been able to make such wide-ranging inferences about the early Earth," Valley said. "This is our first glimpse into the earliest history of the Earth."
Before its discovery, the oldest evidence for liquid water on the planet was from a rock estimated to be much younger -- 3.8 billion years old.
After the festivities, the object will return to its native Australia with Simon Wilde, professor at Curtin University of Technology in Perth, Western Australia, who made its discovery in 1984.
The sample eventually will be put on display at a natural history museum in that country.
_________________ When the last living thing Has died on account of us, How poetical it would be If Earth could say, In a voice floating up Perhaps From the floor Of the Grand Canyon, "It is done. People did not like it here.''
Ah, but the ice will likely support the existence of global warming and justify my use of this ...
_________________ "Though some may think there should be a separation between art/music and politics, it should be reinforced that art can be a form of nonviolent protest." - e.v.
But would science make a difference (has it ever)? Guardian:
An Italian expedition to the Antarctic has taken a sample of ice which is more than 900,000 years old and could give scientists evidence of past climate changes which would discredit global warming doubters.
The ice core, which is double the age of previous samples, will show how much carbon dioxide there was in the atmosphere during previous warm and cold phases in the climate and whether the current concentrations caused by burning fossil fuels are likely the lead to catastrophic global warming later this century.
The new core could be enough to discredit the fast diminishing band of climate sceptics, who have the ear of the Bush administration and who say that the climate has always fluctuated and man's destruction of forests and use of oil has nothing to do with the current rising temperatures and increased storminess across the world.
Ah, but the ice will likely support the existence of global warming and justify my use of this ...
You didn't need any justification for the use of that.
_________________ When the last living thing Has died on account of us, How poetical it would be If Earth could say, In a voice floating up Perhaps From the floor Of the Grand Canyon, "It is done. People did not like it here.''
Joined: Mon Oct 18, 2004 1:03 am Posts: 24177 Location: Australia
Man in Black wrote:
just_b wrote:
April 24, 2005 900,000-year-old ice!
But would science make a difference (has it ever)? Guardian:
An Italian expedition to the Antarctic has taken a sample of ice which is more than 900,000 years old and could give scientists evidence of past climate changes which would discredit global warming doubters.
The ice core, which is double the age of previous samples, will show how much carbon dioxide there was in the atmosphere during previous warm and cold phases in the climate and whether the current concentrations caused by burning fossil fuels are likely the lead to catastrophic global warming later this century.
The new core could be enough to discredit the fast diminishing band of climate sceptics, who have the ear of the Bush administration and who say that the climate has always fluctuated and man's destruction of forests and use of oil has nothing to do with the current rising temperatures and increased storminess across the world.
Hopefully, the scientists involved don't have the same agenda or political motivations as the individual who wrote that last paragraph.
Precisely. The Bush government are quite deliberately using scientists who will support their own agenda. That makes it look as if the scientists are somehow confusing Bush and supplying him with the wrong information... and he's too stupid to know the truth. Bullshit.
_________________ Oh, the flowers of indulgence and the weeds of yesteryear, Like criminals, they have choked the breath of conscience and good cheer. The sun beat down upon the steps of time to light the way To ease the pain of idleness and the memory of decay.
Users browsing this forum: No registered users and 5 guests
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum
