For many years, certain car manufacturers sought to obstruct the transition to electric vehicles. It’s not hard to see why: when you have invested heavily in an existing technology, you want to extract every last drop before disinvesting. But devious as in some cases these efforts were, they seem almost innocent in comparison with the concerted programme by a legacy industry and its tame politicians to suppress a far more important switch: the essential transition away from livestock farming.

Animal farming ranks alongside fossil fuel production as one of the two most destructive industries on Earth. It’s not just the vast greenhouse gas emissions and the water and air pollution it causes. Even more important is the amount of land it requires. Land use is a crucial environmental metric, because every hectare we occupy is a hectare that cannot support wild ecosystems.

Wild ecosystems are crucial for the survival of most species on Earth, and of Earth systems themselves: for example, the rainforest and cerrado of South America help to regulate weather systems. The Amazon rainforest is being destroyed above all by cattle ranching, whose expansion is driven in part by the foodie fad for “grass-fed” beef. The cerrado is being trashed primarily by soy farming to produce feed for pigs and chickens.

Feeding ourselves with animal products is a fantastically profligate and inefficient way of using land, swallowing at least four times as much as all the other food we grow while providing just 17% of our calories. More than any other factor, it drives the destruction of forests, wetlands, savannas, rivers and other habitats.........

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