Media prior to the 20th and 21st century...well, honestly, what media? A newspaper and possibly a man walking down the streets ringing a bell and yelling out what happened the day prior? This was the so called 'media' back in those days. There were no posters, no televisions to place commercials and documentaries on, no billboards or magazines, so I'm guessing that the media didn't really have that much influence over peoples thoughts. If or at the time of anyone in the world discovering global warming, unless in close proximity, no one else would even hear about it for decades! That's if anyone even believed the person. And we wonder why it's taken so long for word to get out about global warming. Well, media coverage is only one part, the part to notify the individual, the government, the world...yet it's not the only factor...