There is no clear answer to this. It's probably over half a billion, but less then a billion.
The developed world has more Atheists than elsewhere.
Many countries outside the US, have a higher population of Atheists.
US is 14%
UK is over 30%
Australia is between 19 - 26%
Sweden is 60% or more.
If you're asking how many people use the word Atheist to describe themselves or even know that word exists. It's less. Atheism is the cool new thing according to many religious people and they believe that once the novelty wears off people will come back to their church and follow their doctrine again.
The School for Atheists has 301 pages.
Yes, doubtless many jazz musicians are atheists.
As there are many millions of atheists, their state of mind will vary.
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There is no census for religion, therefor no one knows exactly how many atheists are in the great state of Wisconsin
Atheists are people who do not believe in religion.The atheists were the most calm and rational people involved in the debate.Studies find that atheists are generally happier and more successful than those who follow Christianity.
There is no set atheist belief for how the world was created. Atheism is just a lack of belief in any deity. Thus an atheist will not believe that a deity was involved in the formation of the earth. Atheists would in all likelihood all subscribe to one of the many scientific theories about the origins of the universe and the resulting origin of the earth. That means, they (we) would take a naturalistic view on its origins: The Big Bang Theory, "M" Theory, and so forth. Atheism is not a religion.There is no unifying belief, only a unifying lack of belief. So atheists do not all actually 'believe in' anything. Atheists do not share beliefs or morals nor is there a code of belief for atheism. Therefore, while some atheists may believe Earth was formed from the sun as science dictates, and some can believe aliens made Earth, 'atheists' in general have no general "beliefs'. Atheists generally rely on science to explain the natural world. They do not create myths to explain things that cannot be explained yet.
Yes there are many fiscally conservative atheists. And many christains are liberals. I am an example of the latter.
There are over 700 million atheists worldwide and are growing year by year.
It seems unlikely that many atheists think about such things! But, atheism isn't considered a mental disorder.
there are many catholics and protestants but also many atheists
Not especially; there are many examples of highly moral atheists.