In 1896, a Swedish scientist, Svante Arrhenius, discovered the greenhouse gas effect, the main cause of how and why global warming has occurred and is still occurring. Even though he discovered this cause over 100 years ago, people today are still questioning the idea of global warming. There is a large amount of confusion over what global warming is, why it is occurring, if people are contributing to it, and whether or not it is serious. Newspapers, polls, and mass media have contributed to this confusion. With the countless amount of information, true and not true, out there, it is no...