Earth"It's impossible to grasp the whole planet or integrate all the descriptions of it. But because we live here, we have to try. This is not just an artistic compulsion or an existential yearning, still less an academic exercise. It's a survival issue. This is the only planet we have. We're stuck here, and we don't own the placeit would be the height of arrogance to assume that we do. We're tenants here, not owners, but we're tenants with hope for a long