“A new genetic study deals a blow to claims that humans reached America at least 30,000 years ago – around the same time that people were colonising Europe.

The subject of when humans first arrived in America is hotly contested by academics.

On one side of the argument are researchers who claim America was first populated around 13,000 years ago, toward the end of the last Ice Age. On the other are those who propose a much earlier date for colonisation of the continent – possibly around 30,000-40,000 years ago.” BBC