Aug 20 (Reuters) - Top-ranked Jannik Sinner arrives at the U.S. Open as the defending champion and a leading contender, though his withdrawal from the Cincinnati final on Monday due to illness adds a ...

Aug 20 (Reuters) - United Airlines' (UAL.O), opens new tab venture capital arm said on Wednesday it has invested in aerospace startup Astro Mechanica, which develops airframe designs and propulsion ...