That’s not the case for all of us, I’m reminded, as I look inside a cardboard box containing around 20 plastic hearts—each a ...

How rare is it for elephants to birth twins? Find out more about this occurrence in the wild and why it's significant.

Twins are pretty rare, accounting for just 3% of births in the US these days. But new research shows that for primates 60 ...

Social-emotional development in twins depends on the attachment they share with each other and their parents. Friendships ...

Several sets of identical twins went on a meat vs vegan diet to test the results, and there's plenty that happened afterwards ...

New research suggests that twins were actually the norm much further back in primate evolution, rather than an unusual ...

George Clooney has opened up about his concerns for his seven-year-old twins, Alexander and Ella, regarding their culture and ...

I thought my twins would be best friends, but they were never close and ran in different circles. They happened to attend the ...

Twins have been rare in human history and for that reason can seem special. Many cultures associate twins with health and ...

This story was excerpted from Do-Hyoung Park’s Twins Beat newsletter. To read the full newsletter, click here. And subscribe ...

While the federal sex-trafficking case in New York moves forward, the state rape cases in Miami-Dade will idle because the ...