happened since g-20 in pittsburgh, the following yeerp we were able to attract the united nations environmental program to select pittsburgh as the most city in the united states for world environment day. and this particular year we're the host city of one young world, which is the sort of the younger generation. the 25s and under. so we're looking at thousands of young potential employees or migrants into the immigrants into pittsburgh who are going to be in pittsburgh this year talking about some very, very meaty issues. i think that you can leverage these as well in a very intelligent way, back to rich's point about public-private partnerships each one of these has a partnership associated with it where the private sector is equally engaged as the public sector. >> you know, you can't pay for the kind of marketing exposure your cities get from hosting these sort of events for four or five days denver was the focal point of the entire world. we were about to dominate the first ever african-american for president of united states. it was a major party convention. you cannot put a dollar figure on tha

the paper produced by the united nations environmental program. they have case studies and show that a green economy can work. the background to all of this is, if financial value is not placed on anything, then people do not value such things. this is fundamentally flawed. to start with that kind of premise. in the report, they say pollinators provided $190 billion. we challenged this. how can you estimate this? how can you put a monetary value to that? with this kind of platform, we find a lot of space for economies, scientists, corporations, who would jump in to begin to come modify every aspect of nature, including the air. the air has been ground, the water, forests, soil. the world is now facing a crisis and this crisis is not providing a way out of the crisis. >> nnimmo bassey, speaking to us from rio de janeiro, from the largest un some of its kind ever. more than 130 world leaders are there. president obama is not there, although he was in copenhagen. the u.s. is being represented by secretary of state hillary clinton. can you comment on

the environmental program of the united nations will be upgraded institutionally, so they will fall shorta fully fledged u.n. organization, but they will get better funding probably and there will be more important. there is strong wording on ocean protection that is a compromise. the one to establish protection zones for oceans. then the green economy was mentioned. one has to say it is a very, very vague declaration, so the ngo's a very disappointment despite the so-called breakthrough. >> thank you very much for that. well, the rio sustainability summit is the culmination of decades of discussion, conscious of growing pressures on the environment of a global leaders and environmental groups that been meeting regularly over the years to discuss policies for a sustainable future. >> climate change and rising co2 levels have been a major focus. fears of global environmental disaster remain. >> 20 years ago, rio de janeiro posted the u.n. earth summit. for the first time, nations agreed to limit greenhouse gases to stop climate change. since then, there has been look "-- a little progress

the united nations environment program is working on an international treaty. the agreement would control the environmental release of mercury. u.n. officials hope the treaty will be enforced by 2013. the efforts of dr. horada played a big role after he started treating mercury poisoning in japan. his work helped spark a global movement to deal with this health threat. >>> a senior member of japan's biggest crime sendcate handed over big money to stay out of jail. the court released him after paying bail, the highest bell ever paid for a yakuza. he is charged with extorting about $45u7b,000 from a public works contractor between 2004 and 2006. he pleaded not guilty wednesday at the beginning of his trial. he is 64 years old. he has actually been out of jail since last month. authorities are letting him stay in the hospital to recover from an illness. >>> the international monetary fund says it's crucial for japan to double its consumption tax to demonstrate its seriously about reforms. managing director david lipton announced funds annual review of japanese policy issues in tokyo on wednesday. >> japan mus