21.   But on Saturday, Secretary of State Madeleine Albright said she detected signals from Putin that he was open to discussion.

22.   By crunching the data, scientists hope to detect signals generated by alien civilizations.

23.   Faint signals were detected Sunday and early Monday morning, but nothing has been heard since.

24.   If SETI does succeed in detecting a signal, standard protocol is that they verify it with another observatory, then notify the International Astronomical Union, Shostak said.

25.   In the study, researchers concentrated on a part of the brain cortex that detects sensory signals.

26.   Its crew detected the signal from one recorder Wednesday night and the second recorder Thursday morning, Beltran said.

27.   Its crew first detected signals about midnight, then verified the location Thursday morning, Beltran said.

28.   No such signal has been detected from Roufs, who had been in second place in the around-the-world race, race organizers said.

29.   Nothing has been heard since faint signals were detected Sunday and early Monday morning.

30.   On Saturday, search commanders said a Canadian submarine had detected signals coming from one of the recorders.