From reality TV romance stories to the steamy shows, books and films we can't get enough of, love is in the air ahead of Valentine's Day

The ability to experience love at first sight rests on a cognitive skill you might not even realize you have: Humans are incredibly good at quickly assessing other people. “In less than seven seconds, we can form impressions that are actually fairly accurate,” says Wendi Gardner, a social psychologist at Northwestern University.

Falling passionately in love is one of the most talked about human experiences, celebrated in songs, movies, literature, and art across cultures. Passionate love is widely considered a hallmark of romantic relationships and has well-documented psychological and behavioral effects.

Nearly a century later, her granddaughter, now a sociologist at Whitman College and author of “Love Letters: Saving Romance in the Digital Age,” has saved several of those letters. While they often contained everyday news, such as how farm crops were doing, some aspects hinted at more emotional moments in their relationship.

More than 300 love letters exchanged in the 1960s between longtime Chinatown leaders Bernie and Albert Wong are now on display at the Chinese American Museum of Chicago in an exhibit titled “All My Love.

Forget the Olympics—which country has the best version of Love Is Blind? As season 10 of the U.S. series hits Netflix, we've ranked the finest LiB incarnations from around the world.

Across the globe, many cultures have words for love and attachment that don't have a direct English equivalent. Why it matters: As Valentine's Day approaches, borrowing a word from another language could help you say what "love" alone can't.