Are we alone in the universe? Do aliens exist? Or are we, ourselves, the strangers in our own worlds? Conceived around the title Life on Mars, the 2008 Carnegie International, curated by Douglas Fogle, explores the increasingly relevant yet perplexing proposition of what it means to be human in the world today. The question, "Is there life on Mars?" is a rhetorical one, posing a metaphorical quest to explore humanity's response to a world...