in fact, the epa called it unearthly at some point. what is the cause of such high ozone levels in the county? >> this study is going on -- it appears this its what i was referring to a moment ago, this is tied -- it appears to be a number of factors that the scientists are still trying to learn about. one of the things they recognize, it's tied with sunlight and snow. this past winter we didn't have very much snow on the ground. we did not have any exceedances, we were well below the number. a year ago we had deep snow and the numbers were fairly high and so the scientists, the jury's still out. that's what they're trying to find out. >> trying to find out. i thank you very much. thank you, mr. chairman. >> we'll take a short recess to prepare for the second panel. panelists, thank you very much for being here and staying through two round of questioning on that. i appreciate your time very much. >>> thank you both for being here. nancy stoner is acting director for the water and u.s. environmental protection agency. mr. michael is ac

dozens of people took to facebook and twitter wednesday, speculate being its unearthly origins.urns out, this uav only traveled a few thousand miles, not light-years, to get here from california. >> it came from california. okay. straight ahead on wjz's eyewitness news at 4:00. a preschool graduation, erupts into violence. and that's just part of the story. >>> loud music turns to murder in texas. will the stand your ground law keep a man out of jail? >>> and if only we could bottle this weather, bob is here with the updated weekend forecast coming up. ,,,,,,,,,,,,,,,,,,,, >>> psychiatrists take the stand in the trial of norwegian self-confessed mass killer, anders breivik, deeming him mentally insane. anders breivik is charged with killing 77 people during two terror attacks last year. he's been on trial since late april. >>> the last remaining member of the japanese cult for the gas attack is under rest. arrest. total of 12 people. 13 people were killed. and dozens of others. today, many suffer from vision problems. >>> a texas man faces up to life in prison for killing his ne

epa called it unearthly at some point. what is the cause of such high ozone levels? >> this study is going on. it appears, what i was referring to a moment ago, this is tied, appears to be, you know, a number of factors, scientists are still trying to learn about. one of the things they recognize is it's tied with sunlight and snow. this past winter we didn't have very much no on the ground. we did not have any exceedances. we were well below the number. a year ago we had deep snow and the numbers were fairly high. so the jury is still out. >> i thank you very much. thank you, mr. chairman. >> now take a short recess to prepare for the second bill. panelists, thank you very much for being here and staying to two rounds of questions but i appreciate your time very much. [inaudible conversations] >> [inaudible conversations] >> witnesses, thank you both for being here. nancy stoner is acting assistant minister for water, epa. mike pool is to be director of bureau of land management as of tomorrow. so the we are breaking u.n. official. we will try to be done before you'