Is global warming a serious threat? As human technology has been developed by scientists and researchers, we not only get a comfort in living throughout our life but it also helps people to find more jobs and less popery. However, on the other hand, there are some increasing problems on our planet earth due to human activities. They increased the global temperature about 0.5F to 1.1F (0.3~0.6C) since the last half of the 19th century (…showed first 75 words of 885 total…

…showed last 75 words of 885 total…usable forms. The movement of wind and water, the heat and light of the sun, steam trapped underground, the carbohydrates in plants.--al-are natural energy forms that can supply our needs in a clean, nonpolluting, and sustainable way. Maybe the best solution for the global warming is not that far away. We just have to think about other creatures besides human beings and love our planet earth and try our best not to hurt them.