Let me declare a conflict of interest … I’m a vegetarian. But not a proselytising vego. Where the rain falls you can feed me on just 10% of the arable land required to feed people on meat. Great. But you can’t grow cabbages in the desert. So far as feeding people goes the rangelands can only be used for grazing animals. Australia is mostly desert.
The unabridged version of this talk can be found <HERE>.