jay parini.hank you very much. >> thank you, jeff. >> ifill: again, the major developments of the day: millions around the world marked christmas 2013. pope francis appealed for peace that does more than paper over conflict. russian prosecutors dropped charges of hooliganism against 29 members of a greenpeace ship's crew. they were seized in september outside a russian oil rig in the arctic. and the military-backed government in egypt formally declared the muslim brotherhood to be a terrorist organization. on the "newshour" online right now, we unwrap the gifts science gave us in 2013. from a rock and roll astronaut to a furry new mammal, we offer some of the year's most interesting scientific discoveries, achievements and pop culture moments. and on "making sense," we bring you a conversation with economist dan ariely on the surprising effect of holiday bonuses on work performance. all that and more is on our website newshour.pbs.org. and that's the "newshour" for tonight. on thursday, we'll unp