How a Tiny, "Beating" Human Heart Was Created in a Lab

Not many inventions are as expensive to create or as likely to fail as new medications.
 It’s estimated that, on average, developing and testing a new pharmaceutical drug now takes 10 years and costs almost $1.4 billion. About 85 percent never make it past early clinical trials, and of those that do, only half are actually approved by the FDA to go on the market. That’s one of the reasons drugs cost so much.
 Now, the good news. Scientists focusing on how to improve the odds of success and speed up the process while keeping drugs safe have developed a promising innovation: “organs on a chip."