or do we? a new study finds americans losing faith in religion. how do midsized s.u.v. do in crashes? the test results are in. and two sisters on a nationwide search for people willing to take a test to save a life. >> they could be the cure for all these patients. captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> pelley: it's hard to imagine the catastrophe in nepal could get worse, but it just did. the country was hit today by the second major earthquake in just over two weeks. this time, a magnitude 7.3. the government reports at least 48 dead, more than 1100 injured. 8,000 died in the quake last month. adding to the tragedy today a u.s. military helicopter delivering relief supplies disappeared with six u.s. marines and two nepales soldiers. seth doane covered the april expwaik has the newest now to this unfolding disaster. seth. >> reporter: good evening. the helicopter had dropped off tarpaulins and rice at one village and taken off fair second village when it went missing. there was no distress signal, but the pentagon confirms radi