A recent study has found that, during associative fear learning, different sensory stimuli activate subsets of inhibitory interneurons in distinct ways to dynamically regulate glutamatergic neural activity and behavioral memory formation.

Fundamentally, poverty reduction is about bringing growth processes to poor areas. Because poor areas can benefit from technical and organizational innovations made elsewhere in the world, it is possible today to create productive jobs faster and in greater quantity than ever before. The puzzle is what helps spread such “best practices.” Saving, investment, education, resources, and new technol...

There is no doubt the Internet is a wondrous creation. The entire world is rapidly becoming obsessed with it. With the advancement of technology, there was a long felt need to give recognition to the electronic means as an alternative to paper based banking. The internet has made banking and other business transactions a lot easier because money is easily transferred from bank to bank, employer...

Two papers in this issue of Cell describe two roles of poly(ADP-ribose) polymerase (PARP) in modulating chromatin structure: as a structural component replacing linker histone (Kim et al., 2004) and as a constituent of a corepressor complex poised to dismiss repression upon receipt of an activating signal (Ju et al., 2004).