join me next time with tomrsation shadyac. >> there is a saying that dr. king had that said there is always the right time to do the right thing. i try to live my life every day by doing the right thing. we know that we are only halfway to completely eliminating hunger and we have work to do. walmart committed $2 billion to fighting hunger in the u.s. as we work together, we can stamp hunger out. >> and by contributions to your pbs station from viewers like you. thank you. >> be more. pbs. >>> tonight on "quest" -- giant ground sloths. saber-toothed cats. columbian mammoths. camels. it's not africa. it's your neighborhood 20,000 years go. join us as we journey back in time to a long-lost bay area full of surprises. >>> and solar eclipses have been the focus of obsession and awe since the dawn of civilization. and even today they continue to provide both inspiration and important scientific information about our sun.