Might the result of one particle—or a dozen, or a hundred—be negligible in relation to human health? Sure. But put enough particles out there, and things change
Got cardiac arrest? There's an app for that, and it's called PulsePoint. With any luck it's coming to a town near you. And it just might save your life—or help you save someone else's
No doubt allowing people to sell their organs would increase the supply for those awaiting transplants. But would the societal benefits of such a move be offset by a further widening of the gap between the rich and poor?