An Aymara woman prepares to take part in a pageant in La Paz, Bolivia, in 2013. Jaqi-Aru, a community of volunteers is working on translating the Facebook interface in the indigenous language of Aymara.
Just before Alaska's Senate voted to make 20 Alaska Native languages official state languages alongside English, Rep. Charisse Millett (seated) held hands with Liz Medicine Crow. Left of them is Rep. Jonathan Kreiss-Tomkins, who introduced the bill.
Skip Gray/Gavel Alaska/KTOO
An Indian schoolgirl dressed as Telugu Talli poses for the camera during a celebration in Hyderabad, home to a study that seems to show the onset of dementia is delayed for people who speak more than one language.
Noah Seelam/AFP/Getty Images
A screen image from a video that professor Carmel O'Shannessy has created. In it, a girl tells a story in "Light Warlpiri," the language O'Shannessy reports she discovered in Australia.
Although a flying pig doesn't exist in the real world, our brains use what we know about pigs and birds — and superheroes — to create one in our mind's eye when we hear or read those words.
Chances are they already speak more languages than you: children from Papua New Guinea's Andai tribe of hunter-gatherers wait for their parents to vote in the village of Kaiam. Over 800 languages are spoken in PNG, a country of about six million people.
Torsten Blackwood/AFP/Getty Images