"Why" in English is used to ask for the reason or explanation of something. If you want me to generate a short article within 500 words, I'd be happy to help with that. However, your request did not specify a topic. Could you please provide more details on what subject you would like the article to cover? For example, it could be about climate change, the benefits of reading, the importance of exercise, or any other topic of your choice. Once I have this information, I can create an appropriate article for you.