In the age of artificial intelligence (AI), foreign language learning can seem like it’s becoming obsolete. Why invest the time and effort to learn another language when technology can do it for you?

The long-held idea that language learning is better before adulthood is up for debate. Adults have a number of advantages when it comes to learning a second language, and it comes with major benefits.

A new study suggests that everyday multilingual habits—from chatting with neighbors to revisiting a childhood language—may help preserve memory, attention, and brain flexibility as we age. An ...