earlier this year in basel, the crowd could see his porcelain tube sculpture in front of the art fair venue. coinciding with the opening of frieze art in london, ai weiwei created a new controversial piece for the turbine hall @ tate modern: a vast carpet of porcelain sunflower seeds. the guardian reports that it took 1,600 chinese artisans to create the 100 million handpainted porcelain 'seeds'. more about the work in this article.