Just for you, Tammy :)
And yes, I agree, science is amazing and how something we thought was right later was thought wrong and then later thought right (and it's NOT new light and flip flopping) as new evidence and better tools come into play to find out new things.
One good example is Lamarck and epigenetics. At one point, it was thought that parental behavior could change their childrens DNA, either pre-conception or in-utero. Later we figured out that couldn't happen and thought it was all BS, then we discovered it kind of COULD happen, the underlying DNA wasn't changing, but the way genes were EXPRESSED was changing.
Granted, it's a little more complicated and nuanced than that, but you get the idea. It's AWESOME.