1000 Melting Men is an ice sculpture that Brazilian artist Nele Azevedo has created around the world, from Brazil to France, Japan, and Italy.

Her installation in Berlin, Germany in 2010 marked the first time that the public was able to participate in the making of the display (video linked in the comments).

Her sculptures draw attention to global warming, and are particularly relevant as we head into what looks to be the warmest year on record with potentially the lowest Arctic sea ice on record (graphs linked in the comments).

We are currently at 403 ppm CO2 (May 26, 2015, Scripps Institute of Oceanography). The last time CO2 levels were over 400ppm, during the Pilocene era (2.2 to 3.6 million years ago), global average temperatures ranged from 3C to 8C above where they are today, and sea levels were between 16 and 131 feet higher than today (Scripps).