Archive: 11/22/2012

I am SAM

Yesterday Mars Science Laboratory principal investigator John Grotzinger set the entire space science world abuzz with a tantalizing promise of "earthshaking" news on the horizon—literally "one for the history books," as he put it in an interview with ...

Nov 22, 2012 4.5 / 5 (4) 2

One material, two types of magnetism

When placed next to a bar magnet, an aluminum ball draws gently towards the magnet. In contrast, a ball made of silver moves out of the magnetic field. The mechanisms underlying these different behaviors ...

Nov 22, 2012 4.8 / 5 (6) 7 | with audio podcast
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