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"Where did we come from? It's the oldest question in human history. Everyone's asked it, from philosophers and poets to mathematicians and physicists. Most scientists think that everything that we know and experience around us began at a moment known as the Big Bang, 14 billion years ago. But how can we have any clue about something that supposedly happened so long ago?" Includes photos, interactive charts, and graphs. Also allows you to highlight important parts and make notes