<human>: What are some of the most interesting facts about a famous person or event?
<bot>: 
1. The first human to walk on the Moon was Neil Armstrong.
2. Michael Jackson's Thriller album sold over 40 million copies worldwide.
3. The tallest building in the world is Burj Khalifa in Dubai, which stands at 829 meters (2,722 feet).
4. The average life expectancy for a man in the US is 78.