Abstract: Grounding and causation are both determination relations. Causation is typically understood to relate events through time, such that causes determine their effects. The throwing of the rock causes the window to break. Grounding is typically understood to relate facts at a single time, such that grounds determine their groundees. The microphysical constitution of the window grounds the fact that the window is fragile. Some philosophers have suspected that there is a deep unity between grounding and causation (e.g., grounding is a kind of causation), and that this unity sheds light on the connection between science and philosophy. This paper offers a new account of the grounding-causation unity, according to which there is no sharp boundary between the two relations. Instead, grounding and causation exist on a continuum. The account solves problems faced by traditional unity views and offers a novel way to understand the methodological continuity between science and philosophy.