Twitter co-founder and chief executive Jack Dorsey said Tuesday he was committing $1 billion of his personal fortune to coronavirus relief through his philanthropic fund.

Twitter co-founder and chief executive Jack Dorsey said Tuesday he was committing $1 billion of his personal fortune to coronavirus relief through his philanthropic fund.
Paul G. Allen, who co-founded Microsoft with his childhood friend Bill Gates before becoming a billionaire philanthropist who invested in conservation, space travel, arts and culture and professional sports, died Monday. He was 65.