In our recent study in Global Change Biology (Li et al., 2018), we examined the relationship between solar‐induced chlorophyll fluorescence (SIF) measured from the Orbiting Carbon Observatory‐2 (OCO‐2) and gross primary productivity (GPP) derived from eddy covariance flux towers across the globe, and we discovered that there is a nearly universal relationship between SIF and GPP across a wide variety of biomes. This finding reveals the tremendous potential of SIF for accurately mapping terrestrial photosynthesis globally.