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: Mars Was Wet, Studies Say, But Was It Inhabited? Scientists say there is no doubt that abundant water once soaked Mars. Now the big question is whether the red planet ever supported life. Some experts say the early signs are promising.

Sci/Tech