An immigrant mathematician is on a mission to save U.S. hospitals billions of dollars and improve the lives of doctors, nurses, and patients. At one hospital, it's working.

Whether you're taking another lap around the sun, buying to hold for decades, or literally running for miles on end, life is ...

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You can use an electric pump or your mouth; it’s easy either way. I’d say it’s pretty durable since we have been using it all ...