The image above illustrates how in our esophagus two sphincters cooperate to facilitate swallowing. The esophagus essay from GI Motility at Nature.com is not above the head of an interested youngster, yet it is the kind of detailed knowledge kids simply do not get in standardized curricula. Congratulations to Nature.com for making the GI Motility section open and free. Next step: get information-packed page modules like this one on to mobile phones. General Science
