RE: What I learnt this week 18: Three-eyed beetles, Graphene super-sieves, Fungicidal nemesis, Bacterial arms race & Banana resistance!

[mangosinspace]

I was also interested in the information regarding graphene. I am curious to understand why water is able to pass through if other molecules that have similar properties to water may not pass. I would also like to understand what changes are made to the graphene that changes the permiability.