Science has given to us many wonderful things. These man-made wonders have made life longer, healthier, more pleasant and more free.
But as years went by has not only created possibilities for us but also problems. Some of the inventions and discoveries can destroy life. The atomic energy that can send a ship across the sea can also sen a submarine to sink that ship. The sleeping tablets we can take us put sleep and can also put us sleep forever if we take too many of it. The airplane that can take us to distance lands can also drop bombs and destroy people and buildings.