⁣Do you want to get media attention when studying the toxicity of a nanomaterial? Well, use graphene and study human sperm. There are already several studies that have taken this path. The new study published in Scientific Reports indicates that concentrations between 1 and 25 μg / ml do not affect sperm viability. The new work, which is perhaps seeking an Ig Nobel prize, uses sperm to study cytotoxicity because in humans it is the easy way.