Olafur Elliasson "The Weather Project"
Olafur Eliasson (born 1967 in Copenhagen, Denmark) is a Danish-Icelandic artist, noted for his exhibition The Weather Project at the Tate Modern, London, in 2003. That same year, he also represented Denmark at the Venice Biennale.
Here is a link to his extensive, continually compelling, exhibit at MOMA NY.

Olafur Elliasson "All is Full of Love"

To really check out his stuff, here is his website.