Cows recycle carbon that originally was taken out of the exact same atmosphere by the plants they eat. The problem with petroleum usage is that it reintroduces carbon that has been out of the cycle since (largely) the Carboniferous epoch (roughly 300mya).
The carbon effect of Cows is like trying to fill a bucket by taking water out of the bucket... and pouring it right back in.
In any case, how does your argument about cows having a significant effect have any bearing on the argument relating to ice melting??? Is the fact that cows create methane (which is a greenhouse gas) going to slow down global warming?
Ever notice how people that are skiing wear sunglasses?
That's because ice reflects sunlight.
Take all the energy that the polar regions reflect because of sunlight, and instead add it to the ocean in polar regions.
That's the math they're saying they did, and the answer they came up with is : the polar cap melts fast!
If you don't want to buy it, do a counter study. As is, their results seem fairly clear and robust. Not saying that they're exactly right, but a counter argument needs to be more then you saying "NOOOOOOO".
A robust definition of evolution is: A change in gene frequencies, in a population, over time.
Many things can cause evolution.
Natural selection is one of these things, and is exceptionally important for explaining life as we see it today.
Migration can cause changes in gene frequencies.
Another cause of evolution is genetic drift; AKA, good 'ol random chance. Gene frequencies change over time just as a result of luck. In a situation with no selective pressures, alleles become fixed in rather short periods of geologic time.
Random mutations, point or otherwise, also are a source of evolution.
Evolution is occurring anytime a population is having a change in gene frequencies. Which, effectively, is constantly. There will be a marginal change in gene frequencies any time you have a death or birth in a population. This background level of evolution isn't necessarily directive, and might not cause big changes over the scale of a human lifespan. It's still evolution!
Potassium-argon dating is not a good method for dating recent things. It's just not. All that your article proves is what science already knows: potassium-argon dating can't be used for dating extremely recent events. Resolution on potassium-argon dating is rarely under a million years; and is often more then that.
Of course, there are other methods that are used for dating things that are newer that have more resolution in the short term, but can't be used for dating very old things.
Slashdot Mirror
Cows recycle carbon that originally was taken out of the exact same atmosphere by the plants they eat. The problem with petroleum usage is that it reintroduces carbon that has been out of the cycle since (largely) the Carboniferous epoch (roughly 300mya).
The carbon effect of Cows is like trying to fill a bucket by taking water out of the bucket... and pouring it right back in.
In any case, how does your argument about cows having a significant effect have any bearing on the argument relating to ice melting??? Is the fact that cows create methane (which is a greenhouse gas) going to slow down global warming?
Ever notice how people that are skiing wear sunglasses?
That's because ice reflects sunlight.
Take all the energy that the polar regions reflect because of sunlight, and instead add it to the ocean in polar regions.
That's the math they're saying they did, and the answer they came up with is : the polar cap melts fast!
If you don't want to buy it, do a counter study. As is, their results seem fairly clear and robust. Not saying that they're exactly right, but a counter argument needs to be more then you saying "NOOOOOOO".
A robust definition of evolution is: A change in gene frequencies, in a population, over time. Many things can cause evolution. Natural selection is one of these things, and is exceptionally important for explaining life as we see it today. Migration can cause changes in gene frequencies. Another cause of evolution is genetic drift; AKA, good 'ol random chance. Gene frequencies change over time just as a result of luck. In a situation with no selective pressures, alleles become fixed in rather short periods of geologic time. Random mutations, point or otherwise, also are a source of evolution. Evolution is occurring anytime a population is having a change in gene frequencies. Which, effectively, is constantly. There will be a marginal change in gene frequencies any time you have a death or birth in a population. This background level of evolution isn't necessarily directive, and might not cause big changes over the scale of a human lifespan. It's still evolution!
Potassium-argon dating is not a good method for dating recent things. It's just not. All that your article proves is what science already knows: potassium-argon dating can't be used for dating extremely recent events. Resolution on potassium-argon dating is rarely under a million years; and is often more then that. Of course, there are other methods that are used for dating things that are newer that have more resolution in the short term, but can't be used for dating very old things.