Today's technological flourishment was never been possible without science!!!
What can we do to educate science deniers?
Appetite to learn is badly required in this regard. On the other side of the coin, not everybody bears the same interest in all arena of study, that's also reality. To penetrate the interest against science into someone's mind, some eye-catching or incredibly interesting demonstration might be helpful. For example, an electronic circuit that provides a heavenly light atmosphere inside the room or a place might be helpful to generate some positive thoughts inside his or her mind about science. Similarly, a homemade or purchased toy missile/helicopter/fighter plane, etc. flying over the sky naturally expected to generate some sort of thoughts about science in someone's mind. Besides that, participating in different science fairs might provide the expected result. We all know that today's technological flourishment has made our life much easier, faster, enjoyable, and so on. All these things should be highlighted while interacting with those having a negative attitude against science.
In a nutshell, the physical demonstration would certainly generate a significantly effective outcome in terms of enhancing someone's inclination to science in comparison to theoretical.