Nature's Force - Episode 4

How are Rainbows formed and what's their science? We look at the largest Hail ever recorded and explain why it comes in so many shapes and sizes. Global Warming is a big issue and topic, and we give a nutshell insight to its meaning and impact on many levels. Forecasting is key and crucial to living with nature and its weather, as it involves precision technologies and expertise. Typhoon Halyan is an example of one of the most devastating storms in recent history and its story illustrates the power and destruction that Typhoons can cause.