A Quote by Stephen Hawking
In the last 200 years the population of our planet has grown exponentially, at a rate of 1.9% per year. If it continued at this rate, with the population doubling every 40 years, by 2600 we would all be standing literally shoulder to shoulder.
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In Washington State, the immigrant population has grown by 42 percent in the five years between 2000 and 2005 - which is an increase from 8 percent to 10.6 percent of the overall population - and the jobless rate in the state has hit a 6 year low.
It is doubling now every two years. Doubling every two years means multiplying by 1,000 in 20 years. At that rate we'll meet 100 percent of our energy needs in 20 years.
Although humans have existed on this planet for perhaps 2 million years, the rapid climb to modern civilization within the last 200 years was possible due to the fact that the growth of scientific knowledge is exponential; that is, its rate of expansion is proportional to how much is already known. The more we know, the faster we can know more. For example, we have amassed more knowledge since World War II than all the knowledge amassed in our 2-million-year evolution on this planet. In fact, the amount of knowledge that our scientists gain doubles approximately every 10 to 20 years.
With the rather stable ratio of labor force to total population, a high rate of increase in per capita product means a high rate of increase in product per worker; and, with average hours of work declining, it means still higher growth rates in product per man-hour.
The immediate cause of the increase of population is the excess of the births above deaths; and the rate of increase, or the period of doubling, depends upon the proportion which the excess of the births above the deaths bears to the population.
The growth of the American food industry will always bump up against this troublesome biological fact: Try as we might, each of us can only eat about fifteen hundred pounds of food a year. Unlike many other products - CDs, say, or shoes - there's a natural limit to how much food we each can consume without exploding. What this means for the food industry is that its natural rate of growth is somewhere around 1 percent per year - 1 percent being the annual growth rate of American population. The problem is that [the industry] won't tolerate such an anemic rate of growth.
If you look at the performance of the zero-income-tax-rate states and the highest-income-tax-rate states, I believe a large amount of their difference is due to taxes. Not only is it true of the last decade, but I took these numbers back 50 years. And, there's not one year in the last 50 where the zero-income-tax-rate states have not outperformed the highest-income-tax-rate states.
Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio.
We've been given the gift of a billion years of cosmic time, and we should not screw it up. But at the rate we're using up our planet's natural resources and fouling our own nest means we're not going to last a billion years.
Well, our economy is very strong and growing. We have created 5.4 million new jobs in the last 3 years. Our unemployment rate is better than the average unemployment rate of the 1960s, 1970s, 1980s, and 1990s.
There is nothing wrong with the planet. The planet is fine ... been here 4 1/2 billion years. We've been here, what, a 100,000 years, maybe 200,000. And we've only been engaged in heavy industry a little over 200 years. 200 years versus 4 1/2 billion. And we have the conceit to think that somehow we're a threat? The planet isn't going away. We are.
We need to continue to decrease the growth rate of the global population; the planet can't support many more people.
The population of the planet is increasing at an alarming rate, and yet each day human beings manage to destroy ten species.
Here's the truth. The proposed top rate of income tax is not 50 per cent. It is 50 per cent plus 1.5 per cent national insurance paid by employees plus 13.3 per cent paid by employers. That's not 50 per cent. Two years from now, Britain will have the highest tax rate on earned income of any developed country.
In recent years, our planet has been warming at an alarming rate and seen record-breaking temperatures. We are now witnessing the sixth mass extinction event in the earth's geologic history. Our sea levels are rising at an alarming rate, threatening our largest cities, like New York, Los Angeles, and Miami.
If fertility drops much below 2.1 babies per woman, the population will shrink unless it is offset by higher immigration. For this reason, a demographic cloud hangs over China. It may be the first country to grow old before it grows rich. ... Its fertility rate is below two and its working-age population will start to decline around 2015.
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