Facing death, Jeff Cross and Lily Cheng had run out of options. But a rare "domino" liver transplant, involving a living donor, gave both a future.

面对死亡，杰夫·克罗斯和程莉莉已经没有其他选择了。但是一个罕见的“多米诺”式肝脏移植(涉及到一位活人器官捐献者)，却给两人带来了新的生机。

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Andrew Cheng, project scientist for the Eros probe NEAR-Shoemaker, said the big question facing commercial space ventures remains what it will cost to get their equipment off Earth.

CNN: 'Fireflies' to scope out space rocks for mining