Experimental Gravity Modification: Rigorous Review of Key Claims, Theoretical Possibilities, and Proposed Next-Generation Falsifiable Tests

This paper presents a rigorous review of the major experimental approaches to gravity modification developed by Amy Eskridge (Institute for Exotic Science), Ning Li, Eugene Podkletnov, and researchers working on the Biefeld-Brown effect and Mach-effect thrusters. We examine historical claims, identify key reproducibility challenges, and explore theoretical possibilities that could account for reported anomalies within or beyond standard general relativity. Building directly on this experimental tradition, we propose four detailed, quantifiable, and fully falsifiable next-generation protocols optimized for modern laboratory capabilities. Emphasis is placed on high-vacuum conditions, electromagnetic shielding, rigorous controls, and open-science practices. The objective is to move the field from anecdotal reports toward reproducible physics, thereby honoring and extending the legacy of the pioneering researchers in this domain.