What will remain … when mankind has disappeared? What will be found, and what will it reveal about us? What will remain from modern technology, from art, from our social order? The answer: Not much, for a culture which has vanished cannot be fully explained. What do we leave behind, what do we keep for our successors? What do we do to be remembered, to not be forgotten, to remain significant in the long term? What do we save from our culture, our art, our technology? We bury time capsules with documents and objects to be found 100 or 1000 years later. We try to save our ideas on microfilm and secure them in an old mine. We collect seeds and deep freeze them to save them for the future. We build a clock to run for 10,000 years. We send messages with spacecrafts well beyond our solar system, so that they can disclose something about us when we, our civilization and the earth, are long gone. What will all this really say about us?