The celebs who have racked up the most CO2 emissions this year using their private jets Taylor Swift - 8,293.54 tonnes Floyd Mayweather - 7,076.8 tonnes Jay-Z - 6,981.3 tonnes A-Rod - 5,342.7 tonnes Blake Shelton - 4,495 tonnes Steven Spielberg - 4,465 tonnes Kim Kardashian - 4,268.5 tonnes Mark Walberg - 3,735.2 tonnes Oprah Winfrey - 3,493.17 tonnes Travis Scott - 3,033.3 tonnes From data sourced by digital agency Ya