Discover the magnetic sense of cows as they align like compass needles, affected by power lines disrupting their natural orientation. Farmers and herders have known for centuries that herds of cattle ...

If shrunken down to micron size, a compass needle could wobble. (Courtesy: iStockphoto/tobias machhaus) A tiny magnetic needle just 10 μm long could be used to create a magnetic-field sensor that – if ...

Farmers and herders have known for centuries that herds of cattle have an uncanny ability to all point in the same direction. Last year, a group of German and Czech scientists discovered the reason ...