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.
This year's festival will have more than 100 events on offer for those of all ages interested in exploring the worlds of science and technology