Science Continues to be Unsettled

You don’t need to follow Justin to become Smarter Every Day. Some random web-surfing turned up these two eye-openers:

• Ancient South American giant sloths dug enormous tunnels that exist to this very day

• Physiologists recently discovered a fourth major salivary gland lurking at the back of your throat

For some folks, this stuff was hiding in plain sight.

Tip from the Geek Press.