It is with deep sadness that we let our readers know our beloved Rick Cohen passed away this morning. His loss will be inestimable to many of you, as it is to us. Rick will be remembered for his integrity, his powerful and nimble intellect, his unyielding courage in pursuit of truth, his commitment to social justice, and his humor. Of all the things and people that he loved, the most important was his cherished daughter Ellie—and to her we say, thank you for sharing him with us. The world is immeasurably poorer for our loss of him. We will let you know what will be done as memorial. In the meantime, we welcome you to write your own thoughts and memories of Rick here.