2 men win a big prize. Henri Kagan comes from France. Kenso Soai comes from Japan. They study molecules. Molecules are very small parts. Some parts look like mirror images.
Living things use only one form of these parts. The men find out the reason. This is very good for new medicine. People make better drugs now.
The prize has much money. The date is the 10 of December. Alfred Nobel invents the prize.