This is a very short (7 minute) video that might help some of you who want to refute the "just a theory" crowd in online debates.
I just noticed that Professor Daves' 'science video' (30 sec. in) got Isaac Newtons' birth year WRONG (it shows 1643) . Newton was born in the same year Gallileo died -- 1642 !
This reminds me of Eugenie Scott's YouTube video about science: