An international team of researchers from the USA and Germany has published an explanation for life in the Deep Biosphere in the magazine Science. Using a bunch of the latest technologies from biogeochemistry, molecular biology and microbiology, the scientists collected a wide range of samples from the bottom of the sea. After intensive analysis, Bo B. Jorgensen and Steven D'Hondt have now published a model with which they explain that microorganisms might survive due to the natural radioactivity deep under the sea floor.