the word "science" defines everything around us and beyond our human imagination. understanding science is always a lot tougher than other topics and it requires a mind and brain far more sophisticated than the average level. if one reads a science article, he /she must always look for author's biases. an author's bias is basically his/her opinions and theory. but most of the time, science articles always has author's biases to be unbiased cause it is a factual interpretation. if the author is biased, then the facts or ideas could be misinterpreting and could lead to some false concepts and news.