11.   But emergence of plants that cope with our pollution is a reminder that nature has a history of adapting to stress.

12.   But as the four tabby-sized tiger cubs in the nursery attest, sometimes nature will have its way, despite precautions.

13.   But his hard-driving nature has had personal costs.

14.   But defending the canal is a role that has changed enormously in the last century, if only because the nature of war has changed.

15.   But nature has a feminine preference from then on.

16.   But nature has no malice in her turbulence and offers respite and illumination for the soul open to the peace in the simple progression of time.

17.   But nature has to take its course.

18.   But the freewheeling nature of Chuy has a sinister side, foreign law-enforcement officials said.

19.   Experts do agree that nature had a little assist from humans with some of these surprising herbs.

20.   His competitive nature had him mauling opponents in tussles for loose balls.