Television's most popular personality is set to highlight veganism — again.

Oprah Winfrey announced that the Feb. 1 program will feature The Vegan Challenge, specifically how she and 378 staffers ate animal-free for an entire week. 

Special guests will include Michael Pollan, author of "The Omnivore’s Dilemma," eco-author Kathy Freston and journalist Lisa Ling will take the audience on a journey through a beef processing plant.

This isn't the first time the talk show queen has embraced an all-plant diet. Back in 2008, she embarked on a 21-day vegan cleanse that resulted in the 57-year-old saying that it made her think less about calories and more about what was happening to her well-being.

Sadly, she didn't stick with it, but I'm happy to see it back on her radar. It's also commendable that she's sending Ling back into the slaughterhouse to report on how our meat arrives at the table. My only caveat? I hope she learns something this time.

Back in '08, Ling did a special on chicken factory farms, taking Oprah's more than 10 million viewers behind the scenes of an industry known for its abuses. The special even helped earn the media mogul PETA's 2008 Person of the Year honor.

Seven months later, Winfrey shocked animal rights activists by partnering with Kentucky Fried Chicken, a well-known PETA target, to give everyone in America a free chicken sandwich. Juxtaposed with the recent factory farming special, it seemed like her effort to consciously enlighten consumers on food sources had been thrown out the window.

So let's just hope there's no Taco Bell giveaway this summer.

Look for Oprah's vegan special on Feb. 1.

Michael d'Estries ( @michaeldestries ) covers science, technology, art, and the beautiful, unusual corners of our incredible world.

Oprah announces Vegan Challenge
Talk show host will spotlight how she and 378 staffers went vegan for a week.