<b>A devastating, compelling account of the federal government''s leading role in bringing about today''s climate crisis.</b><br><br>In 2015, a group of twenty-one young people sued the federal government in <i>Juliana v. United States</i> for violating their constitutional rights by promoting climate catastrophe and thereby depriving them of life, liberty, and property without due process and equal protection of law. <i>They Knew</i> offers evidence supporting the children''s claims, presenting a devastating and compelling account of the federal government''s role in bringing about today''s climate crisis. James Gustave Speth, tapped by the plaintiffs as one of twenty-one preeminent experts in their climate case, analyzes how administrations from Carter to Trump—despite having information about the impending climate crisis and the connection to fossil fuels—continued aggressive support of a fossil fuel based energy system.<br> <br>What did the federal government know