When Dr. Barbara Natterson-Horowitz was asked to treat an exotic little monkey with heart failure at the Los Angeles Zoo, she learned that monkeys can suffer heart attacks from extreme stress — just like humans. That's when the cardiologist realized she'd never thought to look beyond her own species for insights into disease.

We believe the children are the future. And here at Sandwich Monday, we try to foster the next generation of eaters through our after-school programs and subliminal EAT BACON messages. That's why we were so happy to see Peter's daughter Willa had invented her own sandwich: The Pritomus. It's hummus, Fritos and pickles served open-faced on an English muffin.

Peter: Into our mouths from babes.

Voters in southeastern Arizona go to the polls Tuesday in a special election to fill the rest of the congressional term of former Rep. Gabrielle Giffords.

Giffords, a Democrat, resigned in January, a year after she was critically wounded in a shooting rampage. Running to fill the remaining six months of her term are her former aide, Ron Barber, and Republican Jesse Kelly, a businessman and Iraq War veteran.

The special election has echoes of the 2010 congressional campaign in the Tucson-based 8th Congressional District.

In Harlem, a legendary congressman — one of the most influential black politicians in modern history — faced a difficult re-election as allies backed his younger opponent in demanding a changing of the guard.

That was in 1970, when challenger Charles Rangel defeated Rep. Adam Clayton Powell Jr., a mythic figure undone by scandal and frustrated constituents.

Now, 42 years later, Rangel is the iconic lawmaker contending with perhaps his toughest re-election against challengers from within his own party who say his time has passed.