>> is week's united nations rio + 20 conference in brazil has the power to define a more sustainable future for us all. with plenty of risks attached. between industrialised nations and emerging economies. and all delegates are under pressure to prove that this meeting can be more than just another talking shop. of global 3000 on the rio + 20 conference. we want to bring you in on what is being debated -- and here's what's coming up -- sustainable at any cost? how environmentally sound are brazil's hydroelectric dams? emissions trading -- does europe's climate protection market work? and climate killer air conditioning -- an indian company offers customers a cleaner alternative. so what kind of future do we want? that is the official theme of rio + 20 and a very tall order. two decades after the first un conference on sustainable development countries are still struggling to agree on how to tackle a global problem like climate change beyond the national level. host nation brazil is pushing for more sustainable energy sources at home. having successfully pioneered ethanol production,

united nations getting wealth and development. i came from the der bin summit in south africa and rio earth summit in brazil.y know how to get money, talking about international courts for climb reparations. what better way to get the debt of climate reparations paid than by going after the world's billionaires and after a carbon tax which penalizes wealth. >> not only the billionaires but through the companies by regulations and manufacturing rules. so you get a double bang for your buck. >> it's very -- we have a german climate advisor calling for a co2 budget for every man and woman on the planet. your home energy use, travel, train travel, airline travel, all monitored by international agencies. it's not science fiction. they're on record calling for this. >> mark, you've had a lot of people looking at this. have a good weekend. >> all this time i thought it was the president, joe biden, hurling this class warfare stuff. who knew it was us. what the fox. her debit card, and so does bill, an identity thief who stole mary's identity, took over her bank accounts and stole her hard-earned money. now meet jac