you know? i think the global warming not just a hot topic. They were right! the earth just warming up more and more in each years since 20th century begin. That's bad huh? it'll grow so much effect such as skin cancer, cataract, increase of temperature, lungs diseases and unpredictable weather which will make plants and animals dying, and you know how's the ending? of course human extermination. that scared me you know, don't you think so?