On the show today; a hunger strike at prisons across the state entered its fourth day today as inmates refuse meals to protest the use of solitary confinement for those suspected of ties to prison gangs. We'll talk to Los Angeles Times reporter Paige St. John. And the largest American study of Latino/Hispanic health is underway. We'll talk with the researchers to find out what they discovered. And despite fighting hunger and malnutrition, Mexico has overtaken the US as the world's most obese country, according to a new UN report. We'll find out what could be to blame and how the country is combating them. Plus, Americans are exercising more but one small problem ... we're not getting the results we should.