May 3, 2018 7:06 pm Down to Earth With Dagmar: CO2 Levels Reach All-Time High Our air is dirtier than ever. NBC 7’s weather anchor Dagmar Midcap explains why this is cause for concern. US & World Videos 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl 2:59 Keep these travel etiquette tips in mind this holiday season 2:20 Bodies of Missing Men Found in Rubber Bins Inside Storage Unit 1:42 Hundreds of Golden Retrievers Walk a Mile for the Official Boston Marathon Dog 1:51 Typewriter Shop Owner Receives Gift From Tom Hanks