. >> biodiverse city often argued to be important for the world's human populations because all of thelants and uses that we can put to it and fiber that it gives us and food that it gives us. while these are vital and important and worth literally hundreds of billions of dollars, the part that we also have to be able to communicate is the more spiritual sense of how important it is that we get to live side by side with all of these forms that have three billion years of history behind them and how tragic it would be not commercially and not in a utilitarian way but an emotio l emotional, psychological, spiritual way if we watch them one by one disappear. >> this is sort of a merger between art and science and advocacy in a funny way getting people to wake unand realize what is going on -- wake up and realize what is going on. so it is a memborial trying to get us to interpret history and look to the past. they have always been about lacking at the past so we proceed forward and maybe don't commit the same mistakes. >> this is one of the museum's longest art interest groups. it was fou