Smithsonian Magazine on MSN3d
Why Do Mammals Have Outer Ears? Scientists Are Getting Closer to Solving the Mystery
Mammals have exceptional hearing. Using echolocation, bats can detect tiny insects flying in pitch-black darkness. Elephants can recognize the calls of their companions from roughly a mile away. And ...
Scientific American4d
Our Ears Share a Common Ancestry with Fish Gills
The genes that build the cartilage of fish gills were repurposed to build the cartilage in mammals’ outer ears ...