Atheists, explain why SCIENCE disproves God?

Well then your friends are wrong. Science doesn't disprove God, nor does it try to. Science is about studying the universe. The only thing science does is disprove the ancient beliefs and stories about how God supposedly created the earth and life, but it doesn't disprove the actual existence of God. God is an ill defined concept and cannot provide a testable hypothesis, therefore science cannot prove or disprove God.