http://www.sott.net/article/313075-Abor ... 0000-yearsAboriginal Australians have been genetically isolated from the rest of humanity for 50,000 years with no direct evidence that they had ever intermarried with South-East Asians about 4,000 years ago, as some scholars have suggested, a DNA study has revealed.
A detailed analysis of the male Y chromosome from 13 Aboriginal men found no traces of DNA from other ethnic groups, such as people from the Indian sub-continent who were thought to have migrated to Australia about 2000BC.
Take particular note of the number. 300 miles of open water. 50,000 years ago. Seems the Darwinian Caveman's finally on the ropes