American Institute of Physics

Sorting stem cells

When an embryonic stem cell is in the first stage of its development it has the potential to grow into any type of cell in the body, a state scientists call undifferentiated.

Jan 03, 2013 3 / 5 (2) 0

Electronic nose out in front

Chemical sensors are exceedingly good at detecting a single substance or a class of chemicals, even at highly rarified concentrations. Biological noses, however, are vastly more versatile and capable of discriminating subtle ...

May 02, 2012 5 / 5 (1) 0 | with audio podcast

New maps show how shipping noise spans the globe

The ocean is naturally filled with the sounds of breaking waves, cracking ice, driving rain, and marine animal calls, but more and more, human activity is adding to the noise. Ships' propellers create low-frequency hums that ...

May 31, 2013 5 / 5 (1) 0