"anatomy"

Pets Are Impacted By Wildfire Air Pollution. Here’s What To Know

Wildfire smoke and air pollution can cause health issues in dogs and cats. Dr. Link Welborn shares tips for noticing symptoms of respiratory...

Why Do Humans Snore? An Evolutionary Biologist Explains What’s Happening To Your Airway

You snore because your airway was redesigned for language. That structural trade-off has been with us for 40,000 years.

Why Do Humans Have A Philtrum? An Evolutionary Biologist Explains The Groove Above Your Lip

Why humans have a philtrum, the groove above your lip, explained by an evolutionary biologist — from embryonic face-building to vestigial an...

A Biologist Explains Why Men Have Nipples. Hint: Blame Your First Weeks As An Embryo

Men have nipples because embryos are sexually neutral for their first six weeks. Here's the developmental blueprint behind one of anatomy's...

Why Do Humans Have A Uvula? An Evolutionary Biologist Explains

The uvula is nearly unique to humans among mammals. An evolutionary biologist unpacks competing theories for why we evolved this odd little...

Why Do Humans Have Earlobes? An Evolutionary Biologist Explains

That soft little flap of tissue dangling from the bottom of your ear has puzzled scientists for decades. Here’s what we actually know about...

A Biologist Explains Why Some People Have Smile Dimples

Smile dimples aren't caused by a dominant gene — a biologist explains the muscle quirk behind them, and two surprising body parts that work...