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].

Let me give you an example: Comets, Asteroids and Planets around a Nearby Star (SPACE.com) SPACE.com - A nearby star thought to harbor comets and asteroids now appears to be home to planets, too. The presumed worlds are smaller than Jupiter and could be as tiny as Pluto, new observations suggest.
The answer to this example can be: Sci/Tech
Here is why: The topic of the news article is relevant to science(astronomy). Hence, the label is 'Sci/Tech'.

OK. solve this:
Science pinpoints Earth #39;s  #39;hum #39; Scientists believe they have pinpointed the origin of a low frequency  quot;hum quot; that emanates from the Earth. The noise - which can be picked up in the two and seven mHz (millihertz) range - occurs far below the 
Answer:
Sci/Tech