Former Vice President Dick Cheney had a heart transplant earlier this year, after being on a waitlist for almost two years. He was one of the lucky ones because many people die waiting for a heart, kidney, or other organs. Experts agree there’s a severe shortage of human organs and it will likely get worse. This week, we’ve considered how the principle of “pay it forward” worked in a Great Lakes rescue, a young Detroiter’s effort to help the jobless, Good Samaritan experiments, and even in the form of an app.

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