Möbius strip
... that the recycling symbol depicts a Möbius strip?
... that the <a href="./Recycling_symbol" id="mwBiE" rel="mw:WikiLink" title="Recycling symbol">recycling symbol</a> <i id="mwBiI">(pictured)</i> depicts a <b id="mwBiM"><a href="./Möbius_strip" id="mwBiQ" rel="mw:WikiLink" title="Möbius strip">Möbius strip</a></b>?