stephanie tucker has more. this could be the 1st step towards major change. for the 1st time in 47 years, opposition party nita, stanza, strong chance to contest the ruling and pill. a party as governed angola since its independence in portugal. in 1975 spread amazon, grannie. we expect a big day and i believe, and golden people will look at it as a celebration because it is a democracy. many people say democracy does not exist in angola, but the effects of democracy will be seen as all and garlands head to the polls organized. president john maria, so cost his vote early on wednesday, surrounded by tight security. as did opposition leader, i go back to clusters. union voters are electing a new parliament and president the titus races the 1st multi party elections in 1992. and why is that an increasingly disillusioned youth fed up by not seeing angola, petro dollars improve their lives, is why youngest people, we need more jays when in old bridge, that we need more g albert douglas jonah to be president of angola, i believe, got through it really changed this

stephanie: on the edge of saguaro national park in tucson, arizona, maria francisco and tanisha tuckersacred tradition of the tohono o'odham tribe, harvesting fruit from the majestic saguaro, the largest cactus in the u.s, using an old saguaro rib as a gathering tool. they have only a few weeks each summer to do the picking before southern arizona's monsoon season spoils the fruit. >> the fruit that we cook and turn into syrup becomes wine. and that wine is then used for rain ceremonies. stephanie: the sacred tradition has remained the same, but the saguaros themselves are changing. for francisco, the first sign of this is the late ripening of the fruit. >> when i used to come out here with my aunt stella, i would be out here like mid-may and she'd be out here mid-may. now, it's like mid-june. >> what we're concerned about is that we're seeing far fewer, very small saguaros. stephanie: in saguaro national park, which is brimming with the plants, biologist don swann says prolonged drought conditions and higher temperatures are increasing the mortality rate of young saguaros. >> the olde