Pelota mixteca has been played for hundreds of years by indigenous people throughout the Americas. But it's more than a competitive event.

This article talks about how to raise a truly bilingual child

The brains of jazz musicians who are engaged with other musicians in spontaneous improvisation show robust activation in the same brain areas traditionally associated with spoken language and syntax. In other words, improvisational jazz conversations "take root in the brain as a language"

The invention of new ways of speaking is one surprising consequence of migration to Europe.