Developing technology and science can help us in many way in future.It can be used to reduce enmity between one country and other.That is can be used in wars.
It can be used in schools,that is in many schools question papers are getting leaked.So for better security science can be used.Not only this science can be used even for many other reasons.
You can use science for future development in many ways.You can invent robots,cyborgs,bio green toilets and many other things and keep your country clean and tidy.Well,that's how i think one can do good to society by using science.When it comes to getting ideas maybe you just have to look at everything in a very wide angle so that you can get some ideas.Hope you'll understand it.