e st00arat bu cnu ornmo d o oil fuels, tarzan's common deep ocean drilling, fracki it guante ewi grhinthh col. sofei not to say the consequences will not me felt oner. throngaoilk s,ah eme wbaro. enc 2 france. three standard deviations out of the normal. those events are now occurring over 10% of the land area. with a normalci lywud enab%. de tigavbee already. the effects will be much larger. coyouchientically s evly chart the increase how the atmosphere changed? >> yes. we began to measure co2 ecy th50he ermirentt frhascths le andca e le ario 19. wa0 s miion and 18 hundreds began to increase as we ed me l oil d ga isnri rapidly now 390 parts per million. >> host: how does that affect human being to trap the heat radiation from the earth.rmy t composition been constant the planet will radiate to space just as ch energy as it receives. but the gases trap some of goutcom al pti of the planet has warmed up 1.5 degrees fahrenheit ai s.5es pl it ne balance. more coming in and going out byixeta l to. m hal as much warming ine i sed thans hers inla period when it was 1 degree warmer even as warm as it was