<http://schema.org/description>
"Scientists once assumed that running and walking used the same amount of energy -- that is, they burned the same number of calories. However, a group of Syracuse University researchers found that running actually burns more calories than walking. What factor had scientists overlooked in the past?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://adventure.howstuffworks.com/outdoor-activities/running/health/running-burn-calories1.htm>