Raising awareness on the issue of global warming is not easy this days, but artists come up with all sorts of original ways to make the news.

Take Brazilian artists Nele Azevedo, who created 2,000 ice-sculptures and placed them on the steps of the Berlin Opera Hall, to melt. That’s a lot of work to watch melt away in one hot afternoon, but at least her message made the newspapers. And if one more person knows about the melting Arctic ice, than her effort was not in vain.