Natural disaster: its impact and causes. For eons and eons, nature has always graced and relished us with its lovely elements like fresh water, fresh air, moderate temperature and many other other benefits. We humans have always harvested its beauty in many ways. In reality we have always been at the mercy of nature. But at some point, when nature makes its harsh call, it creates a great disaster in the world, devastating the entire surrounding environment and unfortunately making the atmosphere so embarrassing and discouraging. Neil deGrasse Tyson said that: "Even with all our technology and inventions that make modern life so much easier than it once was, it only takes one major natural disaster to sweep it all away and remind us that, here on Earth, we" We are still at the mercy of nature". Natural disasters such as the major Hurricane Katrina of 2005, the 2011 Tohoku earthquake and tsunami in Japan, the eruption of the Krakatau volcano in Indonesia, the 2009 earthquake in eastern Bhutan, the larger 2010 earthquake in Haiti, and the recent Mount Everest avalanches in Nepal and many other natural disasters...