Uploaded November 2014 | Updated September 2026, 1 week ago

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straight shooter video & channel

youtube.com/watch?v=DkBT9xvGQJQ&list=UUROxK0XK2ATH9PVak7-NsLg

youtube.com/user/jawara105

UCLA article
latimes.com/science/la-sci-c1-evolution-fessler-20141009-story.html#page=1

drinking article
washingtonpost.com/news/speaking-of-science/wp/2014/09/30/when-men-drink-their-smiles-get-more-contagious