So we can just tl;dr the better article a couple of people have posted and leave it at that: Keep Bananas Fresh Longer by Separating Them and Wrapping the Stems

So we can just tl;dr the better article a couple of people have posted and leave it at that: Keep Bananas Fresh Longer by Separating Them and Wrapping the Stems in Plastic Wrap (that's the headline from the better article).