Without science we will have nothing, we will probably not even exists and have the good lives that we have today.

The best way to improve our lives, our society and the world, is thanks to science and technology innovations.

Today the only reason we have good lives is because our current level of technology allows us to have immense productivity doing all sort of things, and that productivity is what causes wealthy societies. We have technology all around us because its key to maintain and improve our well being.

About the role of science in building a better a world, I would say its role is a central one, because its the most important factor if we are looking to improve the world.