Scientists finally figured out why we blush

Why do we blush? Is it a reaction to being embarrassed, self-conscious, mortified, or just happy? For years, scientists have tried to figure out why someone blushes. Sure, we know that blushing happens randomly and that, for many, blushing is often seen as a self-conscious reaction. But, for the first time, scientists may have finally figured out why our cheeks turn so red.

To figure out exactly what causes the redness in our cheeks to appear, scientists recorded 40 teenagers and 20-year-olds...