Humanity now faces the existential threat of a leviathan with three heads : a steadily worsening climate crisis, increasingly deadly pandemics, and an unprecedented weaponization of antiscience that renders us helpless in our collective efforts to address any of the great challenges we face. The ideologically-motivated assault on science threatens us all. Climate change is generating devastating heatwaves, wildfires, droughts, floods and superstorms. Last month, Philadelphia had code orange air