The line that no river can cross (except one) It's Okay to be Smart 07-24 954 0 The line that no river can cross (except one) Visit Direct Link Share: Upvote 6 Category: Science Tags: crossexcept You Might Also Like Meet the “squirting cucumber” (it’s not what you think) You won’t believe what NASA found in these asteroid samples! Snowy days really are quieter (thanks to physics) Why is pee yellow? Post comment Cancel reply Save my name, email, and website in this browser for the next time I comment.