Although the concentration of the ozone in the ozone layer is very small, it is vitally important to life because it absorbs biologically harmful ultraviolet (UV) radiation coming from the sun. Extremely short or vacuum UV (10â100 nm) is screened out by nitrogen.
Lightning strikes reach the ground on Earth as much as 8 million times per day or 100 times per second, according to the National Severe Storms Laboratory. Out of all the lightning strikes in the world, the United States accounts for about 20 million of the total number of lightning strikes each year. Continue Reading.
There are an estimated 25 million cloud-to-ground lightning. flashes each year in the United States, nearly 650,000 of which. occur in Illinois alone. Lightning can be fascinating to watch, but it is also extremely dangerous â it is the underrated killer. Few people really understand the dangers of lightning. Many. people donât act promptly to protect their lives, property, and. the lives of others.