it's not going t tbe the salvation of a a our w wer problems that peoplplthink it will be. believe, in genenations to come, water will be e e center conflict all over the globe.. [wririt] water is life. uhuh.. and you have to treatt at spiririrespectable.e. you can't fight over it. you u n't makekeun of it. you can't abuse it, because this water is whahawe a a.. e pyramid lakeke isishat we are. captioning made possible by the annenberg/cpb project captioningngerformrm byy the national captitiing institute, inc. [thinking] glucose...plus oxygen... equals...carbon dioxide plus water... hey, gina, what's up? and energy... pulmonary artery... coronary artery... teacher: i'd like to pass them back to you now. i'm very pleased with your work. ...two types of endoplasmic reticulum... 3:00 already? [girl's thoughts overlap] announcer: she's got the drive, the energy... the heart... and the talent. pre-med. announcer: but she wouldn't be here without your help. please support the united negro college fund. because a mind is a terrible thing to waste. >> mayor for the city and county