Air pollution is thought to be a potential cause of autism as far as expecting mothers and in the Western World atheists tend to live in urban environments rather than rural environments.<ref>Reprod Toxicol. 2015 Aug 15;56:155-69. doi: 10.1016/j.reprotox.2015.05.007. Epub 2015 May 27. [http://www.ncbi.nlm.nih.gov/pubmed/26021712 Prenatal factors associated with autism spectrum disorder (ASD)]. Ornoy A1, Weinstein-Fudim L2, Ergaz Z3.</ref> According to Annie Laurie Gaylor of the [[Freedom From Religion Foundation]], "It’s still lonely being an atheist in rural America."<ref>[http://religion.blogs.cnn.com/2014/05/24/atheists-in-the-bible-belt-a-survival-guide/ Atheists in the Bible Belt, CNN</ref> On the other hand, in some areas of Western World, religious immigrants often live in urban areas.<ref>[http://www.migrationpolicy.org/article/counting-immigrants-cities-across-globe Counting Immigrants in Cities across the Globe]</ref> | Air pollution is thought to be a potential cause of autism as far as expecting mothers and in the Western World atheists tend to live in urban environments rather than rural environments.<ref>Reprod Toxicol. 2015 Aug 15;56:155-69. doi: 10.1016/j.reprotox.2015.05.007. Epub 2015 May 27. [http://www.ncbi.nlm.nih.gov/pubmed/26021712 Prenatal factors associated with autism spectrum disorder (ASD)]. Ornoy A1, Weinstein-Fudim L2, Ergaz Z3.</ref> According to Annie Laurie Gaylor of the [[Freedom From Religion Foundation]], "It’s still lonely being an atheist in rural America."<ref>[http://religion.blogs.cnn.com/2014/05/24/atheists-in-the-bible-belt-a-survival-guide/ Atheists in the Bible Belt, CNN</ref> On the other hand, in some areas of Western World, religious immigrants often live in urban areas.<ref>[http://www.migrationpolicy.org/article/counting-immigrants-cities-across-globe Counting Immigrants in Cities across the Globe]</ref> |