Stem cells: Tuning the death sentence

In this week's issue of Science Signaling (22 January, 2013), Danen and colleagues of the Division of Toxicology of LACDR report novel insights into the question how stem cells decide to commit suicide when their DNA is damaged.

Multimode waveguides bring light around corners

(Phys.org)—Light has become one of our most powerful servants, carrying information ranging from a chat room "LOL" to an entire digitized movie through hundreds of miles of fiber optics in seconds. But like many servants, ...

Sun emit a mid-level flare

(Phys.org)—On Nov. 13, 2012, the sun emitted a mid-level solar flare, peaking at 9:04 p.m. EST.

Integrated optical vortices on a chip (w/ Video)

An international research group led by scientists from the University of Bristol and the Universities of Glasgow (UK) and Sun Yat-sen and Fudan in China, have demonstrated integrated arrays of emitters of so call 'optical ...

Suomi NPP satellite sees auroras over North America

(Phys.org)—Overnight on October 4-5, 2012, a mass of energetic particles from the atmosphere of the Sun were flung out into space, a phenomenon known as a coronal mass ejection. Three days later, the storm from the Sun ...

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