11.   After several recent earthquakes in California, researchers looked for signals of increased strain, suggesting slow slippage, and did not find it, Jordan said.

12.   After the rewired ferrets matured, researchers looked at the auditory region of their brains and found that cells were organized pinwheel fashion.

13.   After several days the researchers looked for signs that the immune cells had been infected.

14.   Age was the only thing that stood out when the researchers looked for factors related to long-term cognitive problems.

15.   But it seems researchers were looking in the wrong place.

16.   But researchers are looking for ways to even the life expectancy by gender.

17.   But the American regimen is too expensive for third-world nations, and researchers are looking for a less expensive alternative.

18.   But researchers are looking further.

19.   Endometriosis runs in families, and that is the focus of the second study, in which researchers are looking for the gene or genes responsible for the disorder.

20.   Even with the next generation of the technology in production, researchers are still looking to put the self-piloted aircraft to practical use.