its carbon dioxide emissions by 2030 and scientists now believe it's going to struggle to meet that thargt. at the talks in paris, though, china will want to talk about some of the progress it has made in fighting pollution, particularly the billions it has spent on solar and hydro power technology >>> a controversial show using a killer whal elizabeth in sand diego is to be phased out by 017. sea world park says the performances will be on the natural habitat and behaviours. the company has seen revenue dropped and has been criticised in a plebly indication about black fish. it was a film about wales in captive item. >> reporter: here is the sea aquarium where a killer weal is has been tried to be released. we're talking about a far bigger organisation. sea world has something like 11 parks in five different states, and specifically we're talking about the one in sandiego california. they're saying the whale will now be replaced by something more educational. they say they are listens and evolving along with the people that pay to go into those parks, but if you look behind all this, ther