If we do not create nature reserves, more animal species will probably become extinct.

如果没有自然保护区，很有可能更多的动物将要灭绝。

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Earlier this year the baiji or Yangtse River Dolphin was declared probably extinct, and the Critically Endangered vaquita (Phocoena sinus) - another species restricted to a small, specific habitat - will follow suit without swift action, conservationists believe.

BBC: Finance woes put porpoise at risk

The Quadrantids are a stream of rocky particles left in the wake of an asteroid known as 2003 EH1, which is probably an extinct comet.

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More probably, it is not so much that men could be extinct, as opposed to our family lives changing dramatically.

BBC: NEWS | Programmes | If | The future's bright, if you're female...