Just now, a posting here on recent research about Proto-Indo-European and its homeland. Also in the media, back on February 24th, the Science Times piece “The Tangled Roots of English” by Nicholas Wade. Which begins:
The peoples of India, Iran and Europe speak a Babel of tongues, but most — English included — are descended from an ancient language known as proto-Indo-European. Scholars have argued for two centuries about the identity and homeland of those who spoke this parent language, but a surprisingly sudden resolution of this longstanding issue may be at hand.
Many origins have been proposed for the birthplace of the Indo-European languages, but only two serious candidates are now under discussion, one of which assumes they were spread by the sword [from the Russian steppes], the other by the plow [from Anatolia].
The recent research supports the Steppe proposal (which is generally favored by historical linguistics, but Wade spends a lot of the article on the Anatolia proposal (which he is on record as favoring). In any case, it’s hard to make sense of Wade’s exposition, which unloads a lot of technical detail in a way that even I found hard to follow.