what science affect our life?想问一些科学带来的问题,希望可以用英文回答

medicine- there are countless examples of great medical discoveries and inventions...they save lives...
首先声明,楼姐没错哈...:)下面是我的..
Nuclear technology~this must be the most awful and terrifying scientific achievement,which maks everybody extraordinarily scared,for the nuclear power we have so far could destory the earth,considered such a big ball in the past while a small village nowadays,for hundreds of times.If there were another war,or even another accident,all kinds of creatures,any forms of information,and even anything would be cruelly,definitely,and completely eliminated.Could you find another example that is more particular than this?