Here are the answers to the questions based on the provided text:

1. **When was William Henry Gates III born?**
- William Henry Gates III was born on October 28, 1955.

2. **What is the name of Bill and Melinda's charity foundation?**
- The name of the charity foundation is the "Bill and Melinda Gates Foundation," also known as the "Gates Foundation."

3. **What is the main purpose of the foundation on a global scale?**
- The main purpose of the foundation is to improve healthcare and reduce poverty globally.

4. **What does the foundation help in America?**
- In America, the foundation helps to open up educational opportunities and provide access to information technology.

5. **When did President Barack Obama honor Bill and Melinda Gates with a medal?**
- President Barack Obama honored Bill and Melinda Gates with the Presidential Medal of Freedom on November 22, 2016.