Forgot to add this last night - also in The Hungry Earth Amy suggests to the Silurians that if they want to live in harmony with humans there are several abandoned places they could inhabit, listing the Australian Outback, Nevada plains and Sahara.
But... people live there. And we already have a pretty bad history with taking land from some people and declaring it to belong to others, including two of the specific places listed. Australia, for example, having been declared terra nulllius in the past as a justification for occupation and colonisation by quite possibly my ancestors. It upset and, yes, outraged me last year to see it so casually suggested that this behaviour be perpetuated, especially when in context of the show there was no hint this wouldn't be a perfectly fine thing to do.