"Stock Market Crash Near? Nobel Laureate Sees 'Bubbles Everywhere'"
"Cooperman-Warren War-Of-Words Escalates: 'You're Either Grossly Uninformed Or Warping Facts For Political Gain''"

Two intense scientific controversies

Just in case you thought economics was the only scholarly field subject to very sharp disagreements, here are two fine examples of hellacious fighting in two other fields:

Mostly polite and respectful, here's a dispute about how correct Darwin was. (Little did I know there was even controversy.) 

"Yale Computer Science Legend David Gelernter Says Goodbye To Darwinism".

"David Gelernter is Wrong About Ditching Darwin".

And second, bitter and vicious as all get out, a fight over what killed the dinosaurs: "The Nastiest Feud in Science".