Phil Keoghan can definitively say that returning to television is one of the best things to happen to his career. And, after a pandemic-induced global shutdown that impacted production for 19 months, it's easy to see why he and the rest of the crew grew emotional after the show made its highly anticipated return.The longtime host spoke with ET's Lauren Zima and they discussed why some of the teams didn't return, what adjustments were made due to the COVID-19 pandemic and why the show is more relevant now than ever before.«It's one of the best things in my career, you know, coming back and seeing everybody smiling,» Keoghan said.But things didn't always look so bright.It was in February 2020 when Keoghan delivered the somber news that production was shutting down due to the unknown surrounding the virus.