3. Improve the following block of text by breaking it up into three paragraphs and shortening some of the sentences.

Global warming—the explanation goes something like this: Energy from the sun heats the earth, and then some of that energy is sent back into space in the form of infrared radiation. A portion of that outgoing radiation, though, is blocked from escaping into space by the earth’s relatively thin atmosphere—a good thing because the infrared radiation that remains stabilizes the earth’s temperature. A problem occurs when the atmosphere, subjected to increasing amounts of carbon dioxide and other greenhouse gases, thickens to trap more of the sun’s infrared energy, preventing its escape from Earth. More trapped energy raises global temperatures—thus the term global warming. Global warming can drastically alter the climate. The predictions are frightening: melting polar ice caps, rising ocean levels, category 5 hurricanes. Are these dire predictions true? Are we really in a period of global warming? The body of scientific evidence does suggest that global warming is a reality.