Tim Cook will step down as Apple CEO

Apple CEO Tim Cook speaks on stage during an announcement of new products at Apple Park in Cupertino, Calif., on Sept. 9.

The 65-year-old Cook will turn over CEO duties to Apple's head of hardware products, John Ternus, on September 1 while remaining involved with the Cupertino, California, company as executive chairman.

(Image credit: Godofredo A. Vásquez)