It looks like we will be forever looking for solutions when we keep on ignoring animal farming in these conversations. Not even a single mention of the orders of magnitude more of water that is required for animal agriculture vs just growing plants directly for human consumption.

Would it solve everything? No. But it would solve a whole lot and the fact that someone that specialises in environmentalism doesn't even mention it shows just how far we are from solving this.

I don't get it. Cattle eat grass. Grass is extraordinarily efficient at using water. It's what would normally be growing there without humans!

70% of the UK is farmland and I'm willing to bet much of that is non-irrigated pasture.