Larry Brilliant gave a talk on TED in 2006, “The case for Optimism,” regarding to global warming. He claims to be optimistic about the increasing trend of co2 concentration, temperature, and sea level in the world because he saw in his personal history. Brilliant lived in a Himalayan Monastery and studied with a wise teacher. One day, his wise teacher command him to work for the WHO Smallpox Program. Brilliant states, “it should make you optimistic that smallpox no longer exist because smallpox was the worst disease in history.” According to Brilliant’s data shown in his presentation on TED, smallpox causes the most deaths of any infectious disease. Smallpox killed nearly 500 million in the 20th century. Because of smallpox, nearly 2 million people died in 1967. Surprisingly, smallpox was declared eradicated in 1979. The eradication of smallpox is one of the greatest reason that shows why Brilliant is optimistic. It is great to be optimistic during difficulties, but can we solve the problem of global warming in the near future? Even thought eh former U.S. Vice President Al Gore provides solutions for global warming or planetary emergency as he calls it. But, we continue to see the rise in CO2 concentration, temperature, and sea level. Although President Al Gore provides so called solutions for global warming, the problems does not seem to ease. Thus, we do not have any solution to solve the problem of global warming. In other words, we cannot stop global warming; we can only prolong the issue of global warming. Are we going to be optimistic or pessimistic when we know that the CO2 concentration, temperature, and sea level will continue to rise even though people start to reduce emissions all over the world? Is there hope for the future of mankind? Do we have faith to believe that the future is glorious?