(1) Isn't the topic of science vs. religion general?
(2) Of course not, we should always strive to explain and know the world around us, but never refute or negate something that cannot be disproven.
(3) The sciences has been in existence for a milennia or more. Much of the early sciences has of course been disproven. Even today Newtons 3rd law can be disproven in certain occasions. Many of the new theories are in contrast to what is considered proven. Science is ever evolving, but you are right, many things discovered have added and enforced current theories. Other have not. It take just as much faith to belive in a god, as to not believe in a god.
