Our Earth: Global Warming - The Evidence
Global Warming has already commenced. The proof is here and we are all suddenly aware that the earth has changed. Extreme climate changes, unusual atmospheric events and the horror of natural disasters is now with us. <i>Our Earth</i> explores the recent phenomenon experienced in every corner of the globe. Global warming is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades. The Earth's average near-surface atmospheric temperature rose 0.6 plus or minus 0.2 degrees Celsius (1.1 plus or minus 0.4 degrees Fahrenheit) in the 20th century. The prevailing scientific opinion on climate change is that "most of the warming observed over the last 50 years is attributable to human activities". <i>Our Earth</i> displays photographic evidence of recent, more serious events including severe heatwaves experienced in the United States, Canada, China, Europe and Australia. Snow has fallen in parts of the world where such a phenomenon has little history. Massive floods have caused havoc in many parts of the world leading to starvation and destabilisation. Cyclones have devoured coastal regions and natural disasters have caused millions of deaths. <i>Our Earth</i> charts the changes to our planet and explains the reasons why we have suddenly reached a critical point.