Jonathan Safran Foer misses meat and says it tastes delicious. Still, the best-selling author is on a mission to convince everyone to join him in almost completely cutting out animal products from their diets.

Eating Animals, Foers 2009 nonfiction book on modern factory farming, famously convinced Natalie Portman to go vegan. In his new book, We Are the Weather: Saving the Planet Begins at Breakfast, Foer argues that avoiding meat is a critical step everyone should take to help tackle the climate crisis. He cites a Johns Hopkins University report that concludes we wont be able to avoid temperature increases of more than 2 degrees Celsius (about 3.6 degrees Fahrenheit) beyond which catastrophic climate change becomes much more likely if global trends in meat and dairy intake continue.

Foer told HuffPost this week that he continues to wrestle with his own temptations to eat meat and dairy products, but said he manages to not eat animal products during the day the vegan before 6 p.m. diet . He also talked about his thoughts on President Donald Trump, meat taxes, the future of livestock farmers and his own health and well-being since becoming vegetarian.

You wrote a book about not eating meat back in 2009. What you brought back to the subject again?

I actually wanted to write a book about climate change and my own really problematic relationship to it, which had begun to feel intolerably problematic. Knowing what I knew, believing what I believed, feeling what I felt and yet doing, well, nothing. The problem was when you look into the things, eating fewer animal products is, according to climate scientists, one of the most important things you can do as an individual to work against climate change.