Blue Marble Evaluation is a global initiative focused on training the next generation of evaluators to Think Globally, Act Globally and Evaluate Globally. The website includes a number of free resources, including case studies, recorded webinars, the Blue Marble Member Network and Forums.
You can't see the Earth as a globe unless you get at least twenty thousand miles away from it. On December 7, 1972, the first photograph was taken of the whole Earth from space. That photo became known as The Blue Marble Shot.