evolve
...that for more than a century, the oxygen we breathe was thought to evolve from carbon dioxide during photosynthesis, but later proven to be split from water molecules instead?
...that for more than a century, the <a href="./Oxygen" id="mwAfs" rel="mw:WikiLink" title="Oxygen">oxygen</a> we breathe was thought to <b id="mwAfw"><a href="./Oxygen_evolution" id="mwAf0" rel="mw:WikiLink" title="Oxygen evolution">evolve</a></b> from <a href="./Carbon_dioxide" id="mwAf4" rel="mw:WikiLink" title="Carbon dioxide">carbon dioxide</a> during <a href="./Photosynthesis" id="mwAf8" rel="mw:WikiLink" title="Photosynthesis">photosynthesis</a>, but later proven to be split from <a href="./Water" id="mwAgA" rel="mw:WikiLink" title="Water">water</a> molecules instead?