The last 3 decades have been the warmest period in history. This is mainly because of human activities that prompted the steep spike of carbon emission in the air. The result is, the air gets warmer, the weather patterns change drastically, and the natural cycle of the environment is disrupted. Rolled into one, this is called, global warming.
Global warming has sparked debates for the last 20 years, but not recently, when we can all experience first-hand the effects of this phenomenon, are we beginning to take actions.