Definition: In this task, you are given a news article. Your task is to classify the article to one out of the four topics 'World', 'Sports', 'Business', 'Sci/Tech' if the article's main topic is relevant to the world, sports, business, and science/technology, correspondingly. If you are not sure about the topic, choose the closest option. Note that URLs in the text have been replaced with [Link].
Input: Coral Reef Damage Rising Worldwide (AP) AP - Only about 30 percent of the world's coral reefs are healthy, down from 41 percent two years ago, according to a study released Monday that lists global warming as the top threat.

Sci/Tech