The most popular global TikToks of the year are a mix of the over-the-top, the weird and the wonderful. Here's a closer look at five favorites.

The world of matchmaking won't have to rely on luck as much as math, thanks to Yunseo Choi. The 18-year-old came up with a matching theory that can be applied to people looking for a life partner.

The 2016 film Hidden Figures highlights black female mathematicians who battled racial and gender discrimination to help the National Aeronautics and...