The atmosphere of Earth protects us and all living things on the earth from dangerous radiation from the sun. In addition to the light we see, the sun also gives off ultraviolet radiation. Much of it is filtered out by the atmosphere.Ultraviolet radiation can destroy living cells causing harm to our skin and leading to skin cancer. The sun's rays are important for us.ET'S TALK. One more thing the atmosphere does is it allows us to talk to each other. If you were talking to your friend and there were no air between the two of you, your friend would not be able to hear a thing you said. Sound waves depend on the air to carry them from one person to another.