. >> ifill: and tom bearden tells the story of a treasure trove of bones dating back to the ice age. >> almost everything we found was something new. for a period of about six days we were finding a new species of animal every day. >> ifill: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: and with the ongoing support of these institutions and foundations. and... this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: diplomatic ripples were felt around the world today over the contents of previously secret government documents which appeared to expose a wide range of internal conflict and debate. it was the third huge disclosure of confidential material by wikileaks, an organization devoted to revealing government secrets. this time a quarter of a million diplomatic papers and cables were released oreaked to several publications. white house and state department officials reacted strongly, warning that the disclosures put lives at ri

"newshour" correspondent tom bearden has our report. the day before thanksgiving-- the busiest travel day of the year. and this year, there was the potential for the traditionally long lines to stretch even longer, because of a loosely- organized protest dubbed "national opt-out day." some travelers said they would express their displeasure with the security measures by requesting enhanced pat-downs rather than go through scanners with advanced imaging technology. the transportation security administration estimated earl this afternoon that approximately 1% of passengers were opting out of the scanners. the pat-downs can take four minutes or longer. the scanners-- as little as 10 seconds. and, on abc this morning, t.s.a. administrator john pistole warned the protest could cause problems. >> obviously, there's some unknowns in terms of how many people may decide to protest and that's one of the variables we are prepared to deal with. but the bottom line is that if a number of people protest at a particular check point it will definitely

. >> ifill: tom bearden tells the story of an organization trying to heal the wounds of war, working with former child warriors in uganda. >> lehrer: we update today's news from the congress, including the guilty verdict for congressman rangel, and the effort to end budget earmarks. >> ifill: and ray suarez talks to army staff sergeant salvatore guinta, the first living service member to receive the medal of honor since the vietnam war. >> i think this represents all those unsung heroes that deserve it so much. this is for them. i can't wear this for myself. >> lehrer: that's all ahead on tonight's newshour. major funding for the pbs newshour has been provided by: this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> lehrer: new warnings today added to fears of what foreclosure problems could mean for the u.s. economy. they came as executives of major banks faced a congressional hearing. the report on home foreclosure problems came as many mortgage lenders have resumed selling foreclose