#2

In 1918, the United States Post Office started regular service of mails by air. The post office set a high price of 24 cents for the service and issued a stamp just for this rate patriotically printed in red and blue. The stamp depicts the  plane chosen to shuttle the mail. Over the years, the value of the stamp has increased tremendously, and it is now the most requested postage stamp for viewing by visitors at the Smithsonian National Post Museum. The reason for its popularity is an error in the stamp. What is the error, or alternatively, what is the stamp called?

#1

It is a food substitute intended to supply all of a human body's daily nutritional needs, made from powdered starch, rice protein, olive oil, and raw chemical powders. Currently undergoing testing and modification, it was designed by software engineer Rob Rhinehart to be a low cost alternative to traditional food that can be prepared and consumed with less time and activity. Lacking a background in chemistry or nutrition, Rhinehart developed the formula through research and self-experimentation. He named it after a fictional food from the sci-fi novel shown below. What is this substitute called?

Hint : The book was made into a hit movie

Answer: Soylent Green. The movie was based on the book. And sorry for the spoiler :). Srivats and pa get it right