David Suzuki is retiring from The Nature of Things in 2023. He has a few people to thank before he goes.

After four decades hosting The Nature of Things, David Suzuki's last show will air on April 7, 2023.

"Before I say my final farewell and disappear into the oblivion, there are people that I would like to thank and acknowledge," Suzuki says in the video above.

The list includes the thousands of people he's encountered since becoming host of the show in 1979, his family and the people behind the cameras.

"And of course, what made it all possible is you, the viewing public! Without you, believe me, The Nature of Things, however good a program, would have been dumped a long time ago."

Next season, two new hosts will join The Nature of Things: Anthony Morgan and Sarika Cullis-Suzuki .

David Suzuki, centre, has hosted The Nature of Things since 1979. He's retiring from hosting the show in the spring of 2023. Meet the show's new hosts: Sarika Cullis-Suzuki and Anthony Morgan. (Jimmy Jeong)

"Please, continue to view us and keep The Nature of Things on air," says Suzuki. "Thank you for all of the time you spent with me."

After 44 years, David Suzuki is retiring as host of The Nature of Things. In Suzuki Signs Off, his final episode, he explores new ways of expressing his ideas, meets up with some neighbours, shows us how global problems are being expressed in his own backyard, and attempts to reconcile the two great influences in his life: science and Indigenous culture.

Watch Suzuki Signs Off on CBC and CBC Gem, Friday, April 7 at 9 p.m. (9:30 NT).