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: Army Wages War on Modern Menaces New ways of protecting U.S. troops from RPGs, biological weapons and more take center stage at a military science conference. There's even a morphine substitute that emerged from the rave scene. Noah Shachtman reports from Orlando, Florida.

Sci/Tech