south polar ice
... that Mars' south polar ice cap may be melting due to regional climate change?
... that <a href="./Mars" id="mwAbs" rel="mw:WikiLink" title="Mars">Mars</a>' <b id="mwAbw"><a href="./Planum_Australe" id="mwAb0" rel="mw:WikiLink" title="Planum Australe">south polar ice</a></b> cap may be melting due to regional <a href="./Climate_change" id="mwAb4" rel="mw:WikiLink" title="Climate change">climate change</a>?