Explore the intricacies of numerical integration for loop amplitudes in momentum space through this comprehensive 47-minute lecture. Delve into key topics including motivation, integration challenges, singularities, single thresholds, subtraction techniques, and the Loop-Tree Duality (LTD) representation. Gain insights into local cancellation, the relationship between thresholds and contours, and practical approaches to numerical integration. Conclude with a Q&A session and important information about postdoc deadlines.