Scientists have known for decades that some animals use the Earth's magnetic field to help them navigate, kind of like an internal GPS. How they do it, though, remains unclear. NPR's Nate Rott reports ...
Add Yahoo as a preferred source to see more of our stories on Google. Researchers at Case Western Reserve University are developing a new self-propelled robotic sleeve inspired by the earthworm.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results