Aboriginal Australian genomes reveal Indian ancestry (2013)
It's an emotionally charged subject, which is unfortunate as it's objectively fascinating from a purely historical perspective.The simplified and (generally) commonly accepted narrative is that a cohesive group arrived here 45-60,000YA, lived peacefully and in harmony with the land right up until Europeans arrived.There's some debate about the megafauna extinctions, but no conclusive evidence either way.   (I did appreciate Dr Yuval Noah Harari's summary of the phenomenon in his book Sapiens.)If it turns out that the original population was partly / mostly replaced (linguistically, culturally, genetically) relatively recently, that potentially complicates a lot of the cultural positioning.As I say, it's a shame, as the migration (including ethno & linguistic) paths over the past ~100k years are just amazing.