A Beautiful Planet calls Earth's atmosphere "a delicate cocoon of air that shields us from our star's radiation." Of course, the atmosphere doesn't completely block electromagnetic radiation from the Sun; without some sunlight reaching the surface, plants could not harvest the Sun's energy, and practically no life as we know it could exist. The atmosphere's ozone layer does filter out much of the harmful ultraviolet light (or "UV rays") produced by the Sun. UV rays can cause skin cancer, and catastrophic damage to the ozone layer may have contributed to Earth's most extensive mass extinction of species ever, the End-Permian extinction (also known
Harmful influence of technology Harmful influence of technology Harmful influence of technology refers to the negative effect of technology which comes along with all of the useful implementations of variety of devices and innovations. People are constantly exposed to waves and radiation emitted from various appliances that are in everyday use. The rapid increase of the number of users of the mobile phones started in the last twenty years of the 20th century, and now multi-functionality of smartphones attract more and more users all around the world according to the Das S, Chakraborty S and Mahanta B. in "A study on the effect of