The fruit of Africa's marble berry (Pollia condensata) is a true living gemstone, sporting a stunning metallic blue sheen ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. The quandong’s fruit appear intensely blue, but without ...

Its unique nanoscale layers reflect blue light, helping it attract birds for seed dispersal. Scientists have long believed that truly blue fruits do not exist in nature. Even common "blue" foods such ...

Native to tropical Australia, Papua New Guinea, and parts of Indonesia, the blue quandong is a tall rainforest tree with spreading branches. (Image credit: Homegrownpalmwoods/Facebook) For centuries, ...