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The Science of Sexual Orientation

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Sexual Orientations Explained: Lesbian, Gay, Heterosexual and Bisexual

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Science Proves There are More than Two Human Sexes

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The Brain's Connection to Sexual Orientation

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Neuro-biology of trans-sexuality : Prof. Robert Sapolsky

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Sex, Gender, and Sexuality - Explained

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The Science of Homosexuality (and Why It Doesn't Matter) - feat. SoundlyAwake

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Prenatal Influences on Sexual Orientation | Marc Breedlove | TEDxMSU

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Gay, Straight, and the Reason Why with Simon LeVay

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Sexual orientation and gender identity

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Unraveling the Causes of Sexual Orientation

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Is sexual orientation genetic—or just a choice?

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Why Is There Homosexuality?

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The Science of Being Transgender

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Is Sexuality a Choice?

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Can science explain our sexual orientation? | Experts Explain

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What makes someone gay? Science is trying to get it straight. | Alice Dreger | Big Think

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The Psychology of Sexual Orientation

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What is Sexual Orientation?

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65 Tips To Coming Out At School