2012: Magnetic pole reversal happens all the (geologic) time

Scientists understand that Earth's magnetic field has flipped its polarity many times over the millennia. In other words, if you were alive about 800,000 years ago, and facing what we call north with a magnetic compass in ...

Vikings could have steered by polarized light

(PhysOrg.com) -- The Vikings are said to have been able to navigate with the aid of "sunstones" that allowed them to see the sun on cloudy or foggy days. Now scientists in Hungary and Sweden say the sunstones could have been ...

Birds evolved compass 'head up display'

(PhysOrg.com) -- Certain birds may have compass information mapped directly onto their vision, much as fighter pilots have ‘head up displays’ overlaying flight information on their view of the skies.

Cracking open the proton

Physicists around the world are cracking open the proton, within the nucleus of the atom, to see what's inside.

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