Vanderbilt University's John Anthony Capra tells the New York Times' Claudia Dreifus in a Q&A that mating between humans and Neanderthals likely took place about 50,000 years ago after some modern humans migrated out of Africa. Modern Europeans and Asians, but not modern Africans, have inherited between 1 percent and 5 percent of their DNA from a Neanderthal ancestor.

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Technology Review reports that 2017 was the year of consumer genetic testing and that it could spur new analysis companies.

A phylogenetic analysis indicates two venomous Australian spiders are more closely related than thought, the International Business Times reports.

In Science this week: CRISPR-based approach for recording cellular events, and more.

A new company says it will analyze customers' genes to find them a suitable date, though Smithsonian magazine says the science behind it might be shaky.