. >>>> we are looooking for a limo the mamaets that t these traders can hold.uch more e than the o oer trads who rerely on it dayay in and o. new rules for you, living involvement, allowing our prices to be more fair, stable, and transparent.t. ♪ >> southern italy. this is the center of the italian orange grove industry. thousands of tons of f fruit are cultltivated from the surroundig countryside and brought here. sale then shipped off foror as fruit or deep fruit, used in drink anand manufacturing. itits the e ecologists escalalin that reveveals a hidden side. >> [speaking foreign language] >> citrus fruit cultivation is vital to the economy of the region, butut rivalries abroad d a price crash have taken their toll. >> [speaking foreign language] >> each winter, thousands of migrants worked, hardly scratching a liviving harvevestg orananges. are are from africa, some from eastern europe, many are in the country illegally. can be 25 euros for four days. but it can be much less. many migrants living in appalling squalor in rundown farm houses or makeshift salo

. >> if you looook at all the new drugs approved by the u.s. . fod and drug administration between 1981 and 2006, almost two-thirds of those would have had their origins in nature, not in our lab. what's more interesting is that oftentimes, nature gives us momocule's that y not make it fully through fda trials, but teach us a tremendous amount about how our bodies work in helping disease. inre is a drug used patients and used on coronary artery stance. these are little mesh tubes that get put into the blood v vessels and supply the heart with oxygen. they are put in after a heart attack and the artery gets clogged. the drug comes from a soil microbes on eastster island. it's becoming incredibly useful. it turns out that its value to medicine is far greater as a drug. we were able to understand a part of how a our cells know when to divide because of this drug. there is a protein i in every cell c called the molelecular targets and we only discovered this protein because we found this molecule in nature. this protein is the gatekeeper r when the c

we have e heard many multinationa who have e come to our mine, yoyou know, and they visited they looookedsystem.. and they said, now we feel comforortable. does that meanan in congo we dot hahave problems? youou know. that that would be lying. >> it's sunday in rubaya. a day off, and a chance to go to church. the day is sacred for mathis too.o.it's thehe k where the miners can pray and rejoice without fear. doing something to resist violence and giving the democratic republic of the congo a chance, certificication appears s to bt least one effective first step towards justice in the minerals trade. >> and now to our global ideas series, where we meet people committed to preserving our planet's climate, flora and fauna. islands that live off tourism often lack the resources to meet their own energy requirements. grenada in the caribbean wants to reduce its dependency on fossil fuels, and promote renewable energy. our reporter k katja dohne tooa closer look at biogas production there. >> ricichmond-hill pririson in grenada. some 450 inmates are incarceratated here. a a few are allolowed out

theinink we need to looook at availability of thisis kind of ammumunition really poses increased dangerause t these damage after they hit the individual, bouncing around inside a person's body and cause internal damage to internal organs. and that is how they are designed to work. i meaean, this whole firearm debate, this whole -- in our country, it is gone to o the radical extrememe. the e nra says if wewe have any commonon sense, reaeasonable restrictions on guns, f firearm, then thahat is just the equivalt of complete abolition. i noted you mentioned my position is mischaracterized. it is mischaracterized because i have never come out to say that no american should be able to own a private firearm. what i have said is we need to have background checks. we need to make sure people who may hurt themselves or others do not get access to these weapons. we should not have any military style weapons. there should be limitary dish limited -- limitations on the size of clips. the center for the disease control should track and monitor gun deaths and violence committed with firearms. not just

a million people who come to work at wal-mart, and a group of 10, 15 people-- if you looook at the b board of f directors, yo'l see a stunning numumber of them have the name walton. but even if you didn't pay attention to that, a tiny group of f people. now, for a country that defines itself as committed to democracy, there's something stunning here. democracy means that if you're affected by a decision, you get to participate in it, the idea being if a decision made by a mayor or a congressman or congresswoman or a senator or a president is something that affects us, which it obobviously does, then we all get to participate. "well, uh, let's see. in where you work, what they make affects your life." how they make it wiwith this chemical or that, that affects your health, your life. whether they do it here or they fire you and do it in another country, you bet that affects your life. so what exactly is your participation in the decisions you have to live with the results of? answer--nothing. you come to work, and you do what you're told. and at the end of the day, you've poured your