What are hurricanes, and how do they form?
Hurricanes are very very fast winds that destroy almost everything in their paths. They form usually off the coast of Africa because it's near the equator. The reason for this is because the water is very warm and is less dense, (above 80 degrees Fahrenheit that is) and then it evaporates and clouds form by condensation, which then causes more and more rising and falling and wind picking up speed. (The coriolis effect needs to happen too in order for this to happen). Soon it travels across the ocean over to the Americas where it all pours down and turns into a hurricane.
In the past, there have been tons of hurricanes. One of the most recent (and yet very devastating) is Hurricane Katrina. It was in August 2005, down on the gulf coast, and had winds of 100-140 MPH and stretched 400 miles across. 1,833 people died from it, and the damage cost was about $21 billion. It was a category 5 hurricane. However, there were others too. One hurricane, Hurricane Dog, was in September of 1951 and was a category 4 hurricane. 12 people were missing, 2 were found dead, and the total damage cost was about $3 million and the wind was about 130 MPH. It was over on the east coast and up in Canada. As you can see, Hurricane Katrina caused a lot of damage, but Dog was also a long time ago and not AS large.
Impact on Human Life
Since Hurricane Dog, technology has gotten a LOT better. Weathermen (and women) can now predict hurricanes weeks before they happen. You alone can find them out on your phone, or you can look it up on the internet. There is always weather forecasts on almost any electronics, and there are sirens and basements that helps you know when something severe is coming.