AJ Jacobs says he’s related to everyone from Gwyneth Paltrow to Albert Einstein. And so are you. Thanks to an amazing revolution in family trees, we can now prove that old saying true: We are one big family. The current global family tree has a jaw-dropping 78 million people connected by blood or marriage (or sometimes both). And it’s growing fast. All seven billion members of the human family are invited to the Global Family Reunion on June 6, 2015 at the New York Hall of Science, on the grounds of the World’s Fair.