Companies like Hong Kong’s Novoheart and New York’s Tara Biosystems are producing miniature hearts that, as Wired points out, can not only save lives but also save money in scientific research. These creations (the former, pea-sized and the latter, a flat, petri-dish version) react to some types of treatment similar to the way a human heart would. Organoid technology isn’t new but the successful biological reactions are. These new developments actually function like heart tissue—and test results utilizing these creations will change the health industry. Read more at Wired.