
Molluscs show engineers how to build droids that can climb all kinds of terrains
Local | Only on CNNCNN's Hugh Riminton looks at the geeky equation in the big money race to find a replacement for coal. | |
Join CNN for a global television event, as we showcase UNICEF's ongoing mission to protect children around the globe. Dr. Sanjay Gupta hosts. Mon 0000, 1000, 1600 GMT
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