The Global Consciousness Project (GCP) is arguably the longest-running mind-matter interaction experiment in history. Composed of a world-wide network of electronic random number generators (RNGs), the GCP collects and stores random samples from each RNG every second and has done so continuously for over two decades. The GCP explores the hypothesis that moments of coherent collective mind, which may be evoked by events reported by the media that attract the attention of millions of people, are reflected by the simultaneous emergence of negentropic effects in physical randomness.