Over 400 natural disasters occur1 globally per year, on average, and the World Meteorological Organisation states2 that over the past 50 years the frequency of disasters has increased five-fold, with the increase attributable to extreme weather, climate change and better reporting. Natural disasters can fall into six categories3 including geophysical (earthquake, volcanic activity), meteorological (fog, extreme temperature), hydrological (tsunami, flood), as well as climatological, biological and extra-terrestrial. Read more...