克隆技术可能使人变得（多余、可代替甚至是处于灭绝的境地）。
即使在“物种大灭绝事件不会在一个可预测的周期中发生”这一观点上达成科学共识，我们也没有理由去怀疑太阳有一颗黑暗的伴星。
Even if the scientific consensus is that extinction events don't occur in a predictable cycle, there are now other reasons to suspect a dark companion to the Sun.
现如今，科学家们认为，这种已经灭绝的、可飞行的爬行类动物的翼展可达到7米长，比先前的设想要长2米或者3米。
It now has scientists thinking the extinct flying reptile had a wingspan of up to seven metres, two or three metres bigger than previously thought.
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