Georgia Tech undergraduate student Lillian Chen demonstrates how she and colleague Alex Hubbard studied snakes as they moved through an arena covered with shag carpet to mimic sand. (Photo: Allison Carter, Georgia Tech)
A new study shows how the motion of snakes moving across a sandy surface can be affected by obstacles.
Researchers studied the motion of mudskippers to understand how early terrestrial animals might have moved about on mud and sand, including sandy slopes. This animal was photographed at the Georgia Aquarium in Atlanta.  (Credit: Rob Felt, Georgia Tech)
A new study used a robot to help understand how the first land animals moved about.