Every year natural disasters are getting more and more frequent. Most scientists believe this is likely due to global warming. Global warming is due to human activity which can change weather pattern all over the world. This is a long answer.

With more warmer air, there will be more cumulonimbus to form and with hotter air in the clouds, more electrical charges can build up, therefore thunderstorms are increasing.

With more unseasonable heat, the risk of funnel clouds are increasing, therefore tornadoes are also increasing.

Over the ocean, there will be more heat to form hurricanes, therefore hurricanes are also increasing.

With more clouds to form, there will be heavier rain, therefore floods are increasing.

Like in the desert, a lot of sunlight means a lot of evaporation, therefore droughts are increasing.

Due to global warming, the average temperature are rising, therefore heatwaves are increasing.

Combining with heatwave and droughts, wildfires are increasing.

With more clouds to form, they can also move to the arctic, therefore snowstorms are increasing.

In the future, there might be powerful hurricane called a hypercane which is much more dangerous due to the warmer oceans. In the past, before humans existed, natural disasters were rare. Even if cumulonimbus form, the electric charges don't build up if the air in the clouds aren't hot enough, therefore thunderstorms were also rare. There was still wildfires but it plays an important role on the planet like consuming dead and old plants. To decrease the natural disasters, we need to reduce the global warming as well.

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Adding the human element in: Much of it has to do with the reporting of events, how they are measured, and the standards different reporting agencies and sources use now and historically, much like the definition of 'natural disaster' has changed. Additionally, in many countries (the US included), we have pushed the envelope of human habitat further and further into nature. What would be regarded as normal flooding patterns from summer rains 100 years ago in the Mississippi river valley has now become a 'natural disaster' due to human infrastructure expansion, and the 'damage' associated with those events. Drought cycle patterns are well documented in California, yet in current years the drought has become a natural disaster. Also consider the recent typhoons in the Pacific basin, and the events leading to the larger losses of life and infrastructure costs: We have seen island nation populations rise, along with population consolidation on the coastal cities going hand in hand with high cost building patterns. Along comes a typhoon, and now we lose hundreds of millions of dollars in buildings, and numerous lives. Years ago, the population was wise enough to not live and build in those areas, using wisdom gained from centuries of suffering these events. Why do we choose to develop and build here? Who bears the risk, and the costs? Communication also plays into the reporting. Even 50 years ago, a flood in China, a earthquake in Nepal or drought in Africa would hardly register a spot in the news. Nowadays, we can see live video feeds as these events are occurring.

Start here, and expand on the various lines. Look into the alleged changes made to historical weather data and the controversy over those claims. And with a critical position, who would benefit from any such changes, if they did occur? What is the baseline for our climate, weather, and natural conditions? What deviations should we expect to see, based upon natural and man made records? For example, what was the weather pattern for 300 years prior to the 'little ice age'? Also look at human factors: If there are pushes for new development among areas that have a greater risk of damage from a natural disaster, what factors come into play? (Building in flood plains, 'development' of river/ocean side properties, SLOSH basin losses due to development...)

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