Over on sciencemag.org, they tell us "Grisly find suggests humans inhabited Arctic 45,000 years ago" here.
Also, on johnhawks.net, they ask, "Did humans approach the southern tip of South America more than 18,000 years ago?" Learn more here.
Finally, on the AsapSCIENCE YouTube channel, they look at "Humans In 1000 Years." Enjoy!