natasha mwansa: we need gender equality, and we need this reflected in national priorities.♪ i'ma show 'em show 'em what i'm made of i keep pushin', climbin' gonna rise up... ♪ woman 2: i think we can do it. woman ♪ i'm spreadin' my wings i got a fight inside i'm a woman on top ♪ helen clark: women's equality is part of the answer to building a better world. woman: ♪ keep movin' ♪ ngozi okonjo-iweala: for the economy, for the community, for the family, for the globe. katherine wilkinson: women and girls are a fierce source of possibility. woman: ♪ go! ♪ wilkinson: if you add up educating girls and family planning, empowering women is the number-one solution to address global warming. melinda gates: empowered women and girls absolutely transform societies. woman: ♪ turn it up, get up move, move, get up... ♪ thunberg: people are striking today in over 150 countries. girl: oh, oh! girl 2: [indistinct] must go! [people chanting "black lives matter!"] gates: we should have female role models at every level of power across the world. [applause] justin trudeau: we set out, with the