Earlier quoted context omitted.
When scientists take all the complex factors into account and do the sums it turns out that in general plant-based foods are still far more sustainable than livestock, e.g. https://theconversation.com/climate-explained-how-the-climat...
I haven't seen one of these that takes major factors into account. Tires and pet food contain animals. Animal by-products are used everywhere. Switching away would require replacements. Replacements would become more efficient with economy of scale, but initial switching costs will be high. Some replacements, like food for our obligate-carnivore cats, might not be possible. Simplest example: Beyond meat is 2-4x the p…
We developed a vaccine against Covid in less than two years, which we previously thought to be impossible to do.
If we really tried, the problems you mentioned would have a sizable chance of being solved.