21st century, 21st century, 21st century      When the river runs dry, what will we say?   Na, na, na, na, na, na, na, na, hey, hey   In the 21st century      Oh, when the river runs dry, what will we do?   Na, na, na, na, na, na, na, na, ooh, hoo   In the 21st century      Oh, when the river runs dry, what will we wear?   Na, na, na, na, na, na, na, na, na, where?   To the 21st century      Now some people sing, some people say   Na, na, na, na, na, na, na, na, hey, hey   Get up off your knees and pray      Pray that the earth don't tire   Of the way that we're puttin' her down   Hope that the universe don't say   "I'm still expanding but your time is up"      Some people sing, some people sigh   Na, na, na, na, na, na, na, na, why?   Why can't we live in peace?      'Cos some people sing, some people say   Na, na, na, na, na, na, na, na, hey, hey   In the 21st century      Hope that the earth don't tire   Of the way that we're puttin' her down   Hope the universe don't say   Stop spinning around      Hope the world don't say   That we've got no place to go   Hope the universe don't say   "I'll be expanding for a while, you know      In the 21st century, in the 21st century   In the 21st century, in the 21st century   21st century, 21st century, 21st century   21st century, 21st century, 21st century   In the 21st century, 21st century      When the river runs dry, what will we say?   Na, na, na, na, na, na, na, na, hey, hey   21st century      The 21st century, the 21st century, the 21st century      Oh, when the river runs dry, what will we do?   Na, na, na, na, na, na, na, na, ooh, hoo      21st century, 21st century