Katherine Ann Dettwyler

In 2017, she gained media attention for her comments regarding Otto Warmbier, a 22-year-old college student who received fatal brain damage while imprisoned in North Korea.

Dettwyler is known for her work studying the duration of breastfeeding in humans as it relates to other mammals, principally the nonhuman primates.

According to her research, the natural age of weaning is 2½ to 7 years old as determined by weight gain, length of gestation, dental eruption, and other factors.

Warmbier was an American college student visiting North Korea who was arrested for allegedly stealing a propaganda poster in a staff-only area of his hotel.

She said Warmbier was "typical of a mindset of a lot of the young, white, rich, clueless males who come into my classes"; that "these are the same kids who cry about their grades because they didn’t think they’d really have to read and study the material to get a good grade", and that Warmbier's parents "ultimately are to blame for his growing up thinking he could get away with whatever he wanted.