Olafur Eliasson installed 1&amp;lt;a href=&amp;quot;http://edition.cnn.com/2015/12/08/opinions/sutter-ice-watch-cop21-two-degrees/&amp;quot;&amp;gt;2 blocks of ice&amp;lt;/a&amp;gt; from Greenland in Paris&amp;#39;  Place du Pantheon during the December 2015 COP21 climate change conference. The blocks melted away over 12 days, highlighting the effects of climate change. 