Artificial intelligence is being harnessed to potentially end animal testing in the medical field. AI systems are trawling through existing animal testing results, preventing the need for new tests. Experts believe AI can extract and synthesize data more efficiently than humans, and is already being used to determine a new chemical's toxicity. While AI is not perfect, it's proving to be more accurate than animal testing in some cases. Several projects are underway to replace animal testing, with many experts backing AI as a key player in phasing out the practice.