In what's quickly becoming a refreshing trend in the entertainment industry, James Cameron took to Reddit last weekend to personally answer fan questions in a classic "Ask Me Anything" Q&A. The 59-year-old covered everything from his work on the next "Avatar" sequels (short answer: the three scripts will be finished sometime in the next six weeks) to his record-setting deep dive in the Mariana Trench.

Cameron's main reason for taking on the AMA was to promote his new climate change documentary series on Showtime "Years of Living Dangerously." To that end, he entertained questions about both the series and his own environmental practices. When asked what the best way to fight climate change was, Cameron surprised many by responding with a change in diet.

“This may surprise you, because it surprised me when I found out, but the single biggest thing that an individual can do to combat climate change is to stop eating animals,” he said. “Because of the huge, huge carbon footprint of animal agriculture. I was shocked to find out that animal agriculture directly or indirectly accounts for 14.5% of all greenhouse gas emissions, compared to all transportation – every ship, car, truck, plane on the planet only accounts for 13%. Less than animal agriculture. So most people think that buying a Prius is the answer, and it’s certainly not wrong, but it’s not the biggest agent of climate change.”

Cameron said that on May 4th, he will celebrate two years of, in his own words, a diet devoid “a single molecule of anything that came from an animal.”

“This includes meat, eggs, dairy, cheese, fish, etc. I feel great. I feel like I’ve set the clock back 15 years,” he added.

When asked what his favorite sandwich was, Cameron showed off his vegan preferences there too - but hold the cucumbers.

“Well, as a vegan, you know, it’s not going to be chicken or ham. I would say probably something with a lot of tomatoes and avocados in it. Maybe some grilled vegetables. Mushrooms are good.

“No cucumbers! Despise them! Won’t touch them!,” he added. “How is it possible to hate vinegar, and hate cucumbers, but still love pickles? It’s an enigma to me. And yet here I am.”

One other little tidbit familiar to MNN readers was Cameron's reasons for his recent purchase of Beaufort Vineyard and Estate Winery on the east coast of Vancouver Island. Amusingly, the winery, which sold for an estimated $2.7M, was actually a strategic complement for the filmmakers organic agriculture ambitions.

"It's actually next door to an 80 acre sustainable organic produce farm, which is what I was primarily interested in, and then I thought that if i wanted to enter the relatively small regional market there for organic produce, it would be good to have the winery as well, because you deal with all the local restaurants and foodies and so on, it's not as simple as just going to the farmer's market," he said. "Plus it was literally next door, and it was an award-winning boutique winery, and it seemed like those two businesses would compliment each other."

He added: "It's a beautiful place and I'm happy to be returning to my Canadian roots by having a home and a farm business there!"

You can check out the full AMA here.

Want more on Cameron's growing agriculture empire? Check out these stories.

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

James Cameron talks vegan diet, winery purchase
In a Reddit AMA, the 'Avatar' director says going vegan has made him feel '15 years younger.'