John Ternus will succeed Tim Cook as Apple's chief executive officer on September 1, 2024, after 25 years at the company. ^[1] Tim Cook will transition from CEO to the role of executive chairman following his departure. ^[2] John Ternus succeeded Tim Cook as Apple's CEO on Tuesday. ^[3] The Abramson Cancer Center of the University of Pennsylvania is conducting a phase 1 clinical trial for 'ConformalFLASH' proton therapy, the first time this precise 3D targeting version has been tested in human patients in the United States. ^[4] John Ternus, the senior vice president of hardware engineering at Apple, has been appointed as the new CEO of the company. ^[5] Ila Kumar, a researcher at MIT's Lifelong Kindergarten group, believes that meaningful innovation emerges when the people who stand to benefit from a technology help create it from the very beginning. ^[6] Apple faces challenges including geopolitical uncertainty, supply-chain pressures, rising component costs, and the need to compete aggressively in artificial intelligence. ^[7] In his first day as executive director, John Ternus thanked the staff for their messages and highlighted the role of Cook during the transition. ^[8] Tim Cook sent his final note to employees on Monday as CEO, expressing confidence in Ternus's leadership and stating he would miss his work at the front of Apple. ^[9] With Ternus at the helm, Apple will be led for the first time since Steve Jobs by an executive whose career is primarily rooted in engineering and hardware development. ^[10] Apple CEO John Ternus faces the challenge of balancing the company's heavy dependence on China while dealing with intense political pressure from the White House. ^[11] Apple is expected to present its first foldable phone at its annual iPhone event scheduled for September 9. ^[12]