Some lasers emit radiation in the form of light. Others emit radiation that is invisible to the eye, such as ultraviolet or infrared radiation. In general, laser radiation is not in itself harmful, and behaves much like ordinary light in its interaction with the body.
Hurricane Katrina is arguably the most notorious storm of the 21st century. The storm made landfall as a Category 5 near Miami before striking Louisiana as a Category 3 storm. Katrina was the third deadliest, and costliest hurricane in US history with more than 1,200 deaths and $108 billion in damage.
The greatest storms on Earth. 1  A tropical storm is classified as a hurricane when wind speeds reach 74 mph (115km/h) 2  A hurricane can expend as much energy as 10,000 nuclear bombs over its lifecycle. 3  The hurricane's spiral is due to the Coriolis Effect, which is generated by the Earth's rotation.