Could you green the Australian desert? How long would it take – 1000 years, quicker? I've read that you could support 8 people per acre of land. There's 1.8 billion acres in Australia - so we could probably have the whole world's population right now - live in Australia. That might be an over kill. But could you green the desert? Could Lake Eyre become a fresh water? Obviously you don't need to right now - but you could start planning it. Does it rain more when you green the desert? Do the plants attract more rain? So i know you would start off with contours and catchments – and would it deplete the salt levels - with mulch and compost. How would it change the current relationship with the earth and the atmosphere? Surely a large project like that would completely change the weather relationships of inner australia? I couldn’t see greening the desert as a bad thing. It’s more like a productive thing. It’s a better, easier alternative than colonising Mars – which a lot of nerds – wish to do. It's not like the desert animals couldn't survive if you planted a trillion fruit trees across australia. How much would it cost – depends how quickly you wanted to do it? But initially you'd just keep doing small projects - which proved it worked. I need to know more about permaculture – because then i could work out the mathematics behind this idea. We need to stop the urban sprawl - because it just takes over mono-agricultural land - and you end up with 40 people living on each acre.