Could this film be the best argument for eating a plant based diet? Orion that landed back on earth yesterday was one of the 1st parts of potentially placing a human colony on Mars. They plan to send 4 people to start the colony in less than a decade is everything goes to plan. This is a 1 way ticket and they will have to grow their own food when they arrive. Thus yes, they first humans on another planet will have to be vegans. From a logical argument, anyone would agree that the smartest people on earth work for NASA. There is not even a discussion or mention is people can survive without meat long term. Nothing at all which tells you that scientists know that this as a fact. If it was a concern in anyway, they would have mentioned it as a major concern of the colonies long term survival. You can say that it is most likely the least of the concerns of surviving on the red planet. I highly advise to watch the video and now use this argument to prove your case even more now. You can logically assume that if they build these domes on earth that they will also have to live off plants to survive. If climate change continues as predicted, the days of eating meat/dairy etc is numbered. Governments will eventually have to make the decision what is best for its people to survive. Any doctor, lay person that argues with you that eating meat is a must is full of it now. Their opinions are either propaganda, brainwashing or just plain ignorance.