Our un-evolved politicians are attacking each other across the globe, but you can safely ignore that for a few minutes to ponder this: just how did vampire bats evolve to live on a diet of blood alone?

Original Paper: Nature Ecology & Evolution (2018) doi:10.1038/s41559-018-0476-8

Source: www.alphagalileo.org/ViewItem.aspx?ItemId=185088&CultureCode=en