Since its first definition by Vernadsky in 1929, the term Biogeosciences has embraced new concepts that result from emerging interdisciplinary views of established interactions. As a consequence, it is now widely accepted that biology has to be integrated into scientific studies of the Earth and other planets, and that biogeoscientists cut across the boundaries between biology, chemistry, physics, geology and other disciplines. This session welcomes showcase the dramatic evolution of biogeosciences over the past century, including the field’s main achievements and their wider effects on science and society. Future challenges in the field will also be highlighted: How and when did life begin? What were the drivers of biological innovation? How will organisms and ecosystems adapt to environmental and climate changes? How will humans affect global change? Is there life beyond Earth? We would like to bring together world-leading scientists from different disciplines to discuss these directions and how they build on the tremendous legacy of the past. This session is co-organized by EGU, AGU and JpGU.