Humans are faced with many challenges, one of which is climate change. An experiment was conducted on the environment and climate in the 1930s when people first noticed climate change. Humans have been trying to change their lifestyles to deal with it, but the observation of climate change is difficult from area to area. A method is introduced to help understand the mechanism of the climate system. Researchers predict that temperatures will increase about two to 10 degrees Fahrenheit by the end of the century. What's less certain is what rising temperatures mean for the planet. Some climate models predict subtle changes. Others forecast rising sea levels, which could flood coastal areas around the world. Weather patterns could change, making hurricanes more frequent. Severe droughts could become more common in warm areas, and species unable to adapt to the changing conditions would face extinction, although much remains to be learned about global warming. Many organizations advocate cutting greenhouse gas emissions to reduce the impact of global warming. Consumers can help by saving energy around the house, switching to compact fluorescent light bulbs, and driving fewer miles in the car each week. These simple changes may help keep the earth cooler in the future.