hoover dam has sat astride the colorado river for three- quarters of a century. a dam many doubted ever could be built but which still supplies power and water today. you have eight generating units on the nevada side and nine generating units on the arizona side. reporter: later on sunday morning, come celebrate the 75th anniversary of the hoover dam. the dam that built the west. osgood: jamie lee curtis is a big star in hollywood who tries never to lose sight of the little things that really count. this morning she talks about that with julie chen. reporter: jamie lee curtis is an actress. what i m about to do is. (tires screeching) reporter: an author, an activist but mostly.. it s being a good mom the hardest job you ve ever had. it is the only job that s truly important. reporter: later on sunday morning.. i hate you. reporter: a heart to heart with jamie lee curtis. my daughter is going to say, mom, you cried on tv. osgood: a crash course on th
reporter: constructed during the great depression, the massive and graceful hoover dam has sat astride the colorado river for three- quarters of a century. a dam many doubted ever could be built but which still supplies power and water today. you have eight generating units on the nevada side and nine generating units on the arizona side. reporter: later on sunday morning, come celebrate the 75th anniversary of the hoover dam. the dam that built the west. osgood: jamie lee curtis is a big star in hollywood who tries never to lose sight of the little things that really count. this morning she talks about that with julie chen. reporter: jamie lee curtis is an actress. what i m about to do is. (tires screeching) reporter: an author, an activist but mostly.. it s being a good mom the hardest job you ve ever had. it is the only job that s truly important. reporter: later on sunday morning.. i hate you. reporter: a heart to heart with jamie lee curtis. my