We need to talk about The Cow in the Room. To reach net zero, we need a revolution in energy, transport and food. While most of us are switched on to wind and solar electric vehicles, we show a blind spot when it comes to the simplest, most urgent step we can take - giving up beef. If cows were a country, they'd be the biggest emitter of greenhouse gases, after China and the USA. They produce huge quantities of methane. Livestock farming has fouled and squandered our natural resources, is insanely cruel and it's killing us. Eating too much meat leads to obesity and heart disease. It doesn't have to be this way. Cut down on meat (and up your fruit and veg) and you'll slash your carbon footprint and likely live longer, with better health. Eat whatever you like while you read this book ... and make your own mind up.