In nineteen, sixty-eight astronaut William Anders took this photo of the earth rising over the moon.
The picture which became known as "Earthrise" showed the world as a lonely fragile oasis.
And it changed the way we see our planet.
It was as if humanity was seeing itself in a mirror for the first time.
Seeing itself as a globe, as an object, would not only change our consciousness but also be inextricably tied up with what would be called "Land Art".
Good evening. Dr. Martin Luther King, the apostle of non-violence in the civil rights movement has been shot to death in Memphis, Tennessee.
Nineteen sixty-eight was a turbulent year for the United States.
And the sudden appearance of earth art or land art can be seen as a response to the heightened political activism of the time.
As well as the emerging environmental movement, the world was changing, and art needed to change, too.
Artists were fed up with the gallery system and the over-commercialization of art and culture.
