Explore spatio-temporal learning from limited labels in this invited talk from the ECCV ATLAS Tutorial. Delve into video action detection, semi-supervised learning techniques, and temporal coherence. Examine the adaptive proximity-aware uncertainty approach and its modules. Analyze training objectives, compare supervised and semi-supervised methods, and investigate ablation studies. Discover frame selection methods, loss formulations, and key findings in experiments. Gain insights into addressing high annotation costs and improving generalization in video understanding tasks.