Some atheists are well known and open about their non-belief, while others are more noncommittal. Kevin Bacon’s name graces many lists of celebrity atheists. Given the Six Degrees of Separation game, we wondered what would the Six Degrees of Freethinkers look like?

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Further, when we think of the concept of atheism, many of us think of it as a phenomenon that describes a sense of lacking, or the absence of something. But seldom do we stop and think about what atheists do have, or what they do bring to the table as a group of self-described non-believers.With that in mind and whether you believe or not, consider the following list of 20 things we bet you didn’t know about atheists and atheism:

There are roughly 4.9 million declared atheists in the United States.

A 2010 survey found that those identifying as atheists or agnostics are on average more knowledgeable about religion than followers of major faiths.

A recent Washington Post article states that atheists are likely to outnumber Christians in England in 20 years.

Sociologist Phil Zuckerman analyzed previous social science research on secularity and non-belief and concluded that societal well-being is positively correlated with irreligion. His atheism-related findings state that compared to religious people, “atheists and secular people” are less nationalistic, prejudiced, anti-semetic, racist, dogmatic, ethnocentric, close-minded and authoritarian.

Zuckerman also found that in the US, in states with the highest percentages of atheists, the murder rate is lower than average; and that conversely, in the most religious US states, the murder rate is higher than average.

It’s not so much that atheists are adamant in their disbelief in a god. Instead, they believe that the burden of proof lies not on them to disprove the existence of God, but on the theist to provide a solid rationale for theism.

Although in Western culture atheists are often not religious in any way, many of them consider themselves spiritual.

Though it may sound like an oxymoron, Jewish atheism is practiced by atheists who are ethnically, or culturally, Jewish. Because Judaism encompasses ethnic and religious elements, the term doesn’t really imply any contradiction. Because Jewish law is based on matrilineal decent, even the most Orthodox Jewish authority would have to accept an atheist born to a Jewish mother as fully Jewish.

Atheism figures in many religious and spiritual beliefs within Jainism, Buddhism, Hinduism and Neopagan movements, such as Wicca.

In the 20th century, atheistic thought found recognition in a wide variety of other philosophies, such as existentialism, anarchism, Marxism, and feminism, and the general scientific rationalist movement, to name a few.

The prevailing myth is that atheists hate God; however, one cannot hate something that he/she does not believe exists.

According to atheism educator Austin Cline, a person who truly enjoys and appreciates his or her life will take pleasure in it and enjoy it, regardless of whether any sort of afterlife exists.

New Atheism is the name given to a movement among some early-21st-century atheist writers who advocated that “religion should not simply be tolerated but should be countered, criticized, and exposed by rational argument wherever its influence arises.”

Although the term atheism originated in 16th-century France, ideas that would be recognized today as atheistic are documented from the Vedic period in India and the classical antiquity.

One common myth about atheists is that “there are no atheists in foxholes.” The Military Association of Atheists and Freethinkers works to assist non-believers in the U.S. Army and promote awareness of atheists in foxholes. The idea that life-threatening circumstances magically convert atheists to theists is likely wishful thinking on the part of religious believers who have a hard time thinking of anything outside the context of their own religion.

The Oxford English dictionary defines atheism as the disbelief or denial of existence of a god.

The only religious group that’s growing in all 50 American states is “No Affiliation,” according to researchers, Daniel M. Abrams, Haley A. Yaple and Richard J. Wiener; and census data from 85 regions worldwide, show the same trend away from identification with faith. The Netherlands is already 40 % irreligious, Australia and the Czech Republic are both 60 % God-free.

The group American Atheists has erected controversial billboards—in Hebrew in Brooklyn, NY, and in Arabic in Paterson, NJ—that say: God “You know it’s a myth… and you have a choice.”

Atheist feminism is a movement that advocates the equality of the sexes. Atheist feminists believe that the majority of the religions are sexist and oppressive to women.