Originally posted by WellCookedFetus
the mutant alleles for both illnesses my be of some beneifit in heterozygous form (one good gene, one bad, pair) but the homozygous (only mutant gene no working copy) is leathal, so we can still engineering to prevent that from happaning.
Yes That was my point, we need to speed up that alleles extinction, and to do that we should use every tool at our disposal.
The earth will eventually reach its limits in how many humans it can carry. Eventually technology will no long be able to keep up with our energy and food demands. At our present rate of growth the world will no long be able to supply its demand for oil within 20 to 30 years, coal in 40-50 years and natural gas in 80-100. This is not that we will run out of oil, coal and gas, but that are demand for these things is exponentially increasing and production for those fuels are bell shaped curves. It was predicted that in the mid seventies America would no longer be able to supply its demand for oil and it came true, those same scientist predicted the world will no long be able to supply it demand by 2020-30. That prediction is based off if we mined all possible oil reserves; more conservative predictions put oil supply and demand problems at 2006±2. Also using so much fossil fuels will increase C02 levels in the atmosphere cause global warming, within 100 years all of the Midwest will have the same weather as Nevada and all of Europe will have the same weather as Canada and in general the amount of farmable land will reduce. In a few hundred years all of the polar ice caps will melt and sea levels will rise by 350-400 feet, that means no more Netherlands, Malaysia, American west coast and Florida. After that the general imbalance in things will most likely trigger a reverse shift and another ice age; which is even worse!. All that because we had to many mouths to feed?
Rubbish. Sorry but thats rubbish. The line I liked best was
It was predicted that in the mid seventies America would no longer be able to supply its demand for oil and it came true, those same scientist predicted the world will no long be able to supply it demand by 2020-30.
How can we run out of oil twice? Once its gone its gone, you can only run out of it once.
Our KNOWN reserves of oil are right now have never been greater. We have more years of supply left today than at any time in history. Doesn't sound to me like we are running out?
Lets assume however that supplies did start to run out. We have only taken the most profitable fraction from all the 'exhausted' well heads. As prices go up they will once again become economically viable. Lets say we eventually use up all the oil, hundreds of years into the future. Can we not simply use something else? Like for examples the thousands of years worth of oil trapped in shales? Yes it exists, its not profitable to extract it today but if prices go up in a real shortage it will become profitable.
I speak of prices going up, and this sounds terrible, but remember that raw products, even oil comprise only a small part of the cost of finished goods. Oil is no more than a couple of percent of global GNP. So what if it doubles? You'll be 1-2% poorer. OH NO!!!!!!!!!
Now onto global warming. What really makes me laugh is that only a few decades ago we were worried about global COOLING!! Remember the worse things scientists make things look the more money we will pay them to monitor them. If you financed a science project and the scientist came back and said everything was fine would you finance his work next year? No you wouldn't so he will highlight any anomaly, and get his funding. Its institution bias, its to be expected and so should be allowed for.
The computer models don't seem to agree with your predictions for sea level change. The sea levels will rise but not by that much.
Also its interesting point to note that the maximum temperatures don't seem to have increased much. The the minimum temperatures that have increased. What does this mean? Less frost, better growing conditions, MORE farmland!!
My suggestion, chill! The world isn't that bad a place. Oh and look at all the facts on this particularly interesting topic.