Mark Zuckerberg founded the social networking website Facebook.
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Facebook's parent company, Meta, laid off 11,000 employees amid a weak advertising market.
Project Starshot was announced by Yuri Milner, Stephen Hawking, and Mark Zuckerberg.
One billion people logged into Facebook for the first time, surpassing a major milestone.
Mark Zuckerberg and his wife Priscilla Chan gave $3 billion to fight and end all diseases.
In one day, Facebook lost $120 billion in value on the stock market.
