"This has been an incredibly difficult 72 hours, " Gene Chizik, Auburn's head football coach, told reporters Tuesday.

CNN: Suspect in Auburn killings turns self in

For the better part of two hours, the audience joins Denzel Washington and Gene Hackman as they wrestle (literally) with whether it is too late or too soon to unleash their sub's deadly salvo.

CENTERFORSECURITYPOLICY: Center For Security Policy

With the help of Chiara Cirelli, who also works at the University of Wisconsin, Dr Tononi has created a mutant fruit fly that sleeps only two or three hours a night. (A normal fly sleeps between eight and 14 hours.) The mutation itself is in a gene for a nerve-cell protein of a type known as an ion channel.

ECONOMIST: Memory formation