Global warming is arguably one of the biggest topics that come to mind when talking about sustainability. Between 1906 and 2005, the global average surface temperature rose 1.1 to 1.6 Fahrenheit. In addition, this increase in temperature has doubled in the past 50 years. The climate change is going to have a huge impact on the sustainability of water supplies in the coming decades. This change however is brought by our own human activities that involve heavy emissions of carbon dioxide. In fact, since the Industrial Revolution began, the level of carob dioxide has increased almost 40 percent as of 2010.
In today’s lecture, we learned that about 27% of household water usage goes towards toilets. If we can somehow find a way to reduce that percentage by as little as 5% every year, I believe that will significantly increase our water supply in the future.