Hear about the latest improvements to Unreal Engine’s Volumetric Fog and lighting features. Within a beautiful nature scene you will learn how to set up these effects and achieve spectacular results by authoring Volumetric Fog through the Material Editor
https://dev.epicgames.com/community/learning/talks-and-demos/Ebe/volumetric-fog-and-lighting-in-unreal-engine-4-gdc-2018-unreal-engine