TODAY | March 25, 2014
>>> now a major milestone for a woman who has been the face of feminism for the last decade. gloria steinem turns 80 today. here's nbc's kristen dahlgren.
>> reporter: gloria steinem isn't mourning her 70s. she's too busy, the globe trotting activist is ushering in her 80s the same way she's lived for decades.
>> she's always on the move, she's always flying to another place. she's always organizing another country.
>> in this country, steinem will always be remembered for the feminist movement.
>> women earn approximately half of what men do.
>> she's appeared on "today" many times.
>> women's pattern of activism has always been the reverse of man's. that is, we tend to get more activist as we get older.
>> and now, just as she changed the rules on what it meant to be a woman, steinem is showing women, it doesn't have to be over in their 80s.
>> it's amazing to me she's so unflagging at her age. so completely devoted to the stuff she does.
>> four decades ago, steinem was famous for declaring this is what 40 looks like. at a time most women hid their age. since then, she's aged in public, even battling breast cancer . and now, embracing life in her ninth decade. she tells the "new york times," i seriously loved aging. i found myself thinking things like, i don't want anything i don't have. how great is that?
>> she does say, well, you do begin to think about mortality. but i have confidence that when she's 90, she'll be looking back and saying, well, 80 was great, but now 90, we've got to get serious here.
>> steinem is not alone. joan rivers , florence henderson , carol burnett and barbara walters , all over 80. and suzanne summers turned heads. empowered women, what gloria steinem was fighting for. nbc news, chicago.
>> happy birthday to her.