The <a href="https://en.wikipedia.org/wiki/Butler_Act" id="mwkQ" rel="mw:WikiLink" title="Butler Act">Butler Act</a> prohibits the teaching of <a href="https://en.wikipedia.org/wiki/Human_evolution" id="mwkg" rel="mw:WikiLink" title="Human evolution">human evolution</a> in <a href="https://en.wikipedia.org/wiki/Tennessee" id="mwkw" rel="mw:WikiLink" title="Tennessee">Tennessee</a>.