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 ...

Some inventions are so simple that it’s hard to improve them. The magnetic compass is a great example — a magnetized needle, a bit of cork, and a bowl of water are all you need to start navigating the ...

Bacteria of the species Magnetospirillum gryphiswaldense are unicellular organisms that can align their locomotion precisely with the Earth's magnetic field. They owe this ability to tiny magnetite ...

Do you know how birds know where to fly, stop, and stay? Discover the secret of how they migrate so successfully by seeing ...